/* Check to see if the user is using a DOM-compliant Web browser */
/* If not, send them to the page that tells them that they are   */
/* using a non-standard browser and that this site only works    */
/* with browsers that comply to the W3C standards.               */
if (!document.getElementById) {
    window.location = "http://www.powercreative/non-standard"
}



function isUndefined(property) {
    return (typeof property == 'undefined');
}

// The first thing we need to do is add the Array.push() method for those browsers
// that do not support it (IE5.0 on Windows, and IE 5.1 on Mac -- THANKS Microsoft!)
// Array.push() - Add an element to the end of an array
if (isUndefined(Array.push) == true) {
    Array.prototype.push = function() {
        var currentLength = this.length;
        for (var i = 0; i < arguments.length; i++) {
            this[currentLength + i] = arguments[i];
        }
        return this.length;
    };
}


// Some generic functions to make it easy to deal read and change tag styles
function getRef(element) {
  if(typeof element == "string") { element = document.getElementById(element);}
  else if (typeof element == "element") { element = element;}
  return element;
}
function setStyle(element, style, value) {
    getRef(element).style[style] = value;
}
function getStyle(element, style) {
    return getRef(element).style[style];
}



// These make the elements completely go away are come back
function hideElement(element) {
    setStyle(element,'display','none');
}

function showBlock(element) {
    setStyle(element,'display','block');
}

function showInline(element) {
    setStyle(element,'display','inline');
}


// These make them simply not visible, but still take up space
function makeVisible(element) {
    setStyle(element, 'visibility', 'visible');
}

function makeInvisible(element) {
    setStyle(element, 'visibility', 'hidden');
}




/**
 * Gets the first child text node within a specified node
 */
function getChildTextNode(currentNode) {
    var children = currentNode.childNodes;

    for (var i = 0; i < children.length; i++) {
        if (children[i].nodeType == 3) {
            return children[i];
        }
    }

    return false;
}



function RotateBanner() {
    //alert("Banner" + currentBannerNumber);
    var currentBanner = document.getElementById("Banner" + currentBannerNumber).style;
    currentBannerNumber++;
    if(currentBannerNumber > numberOfBanners) { currentBannerNumber = 1; }
    var nextBanner = document.getElementById("Banner" + currentBannerNumber).style;

    currentBanner.display = 'none';
    nextBanner.display = 'inline';
}

function OpenFootnotes(footnoteNumber) {
    var footnoteWindow = window.open("/products/footnotes.asp#footnote" + footnoteNumber,"footnotes","toolbar=no,location=no,directories=no,status=no,menubars=no,scrollbars=yes,resizable=no,width=600,height=450");
    footnoteWindow.focus();
}


function EnlargePhoto(filename,brand) {
    var popUp = window.open('/popups/photo-enlargement.asp?filename=' + filename + '&brand=' +brand, 'photo', 'width=600,height=550,scrollbars=yes,resizable=yes,menubar=no,toolbar=no');
    popUp.focus();
}

function ImagePopup(filename, width, height) {
    var popUp = window.open('/popups/image-popup.asp?filename=' + filename, 'imagepopup', 'width=' + width + ',height=' + height + ',scrollbars=yes,resizable=yes,menubar=no,toolbar=no');
    popUp.focus();
}

function DefinitionPopup(term) {
    var popUp = window.open('/popups/definitions/' + term.toLowerCase() + '.htm', 'definitionpopup', 'width=300,height=350,scrollbars=yes,resizable=yes,menubar=no,toolbar=no');
    popUp.focus();
}


function PopupDefinition(term) {
    var popUp = window.open('/popups/definitions/' + term.toLowerCase() + '.htm', 'definitionpopup', 'width=300,height=350,scrollbars=yes,resizable=yes,menubar=no,toolbar=no');
    popUp.focus();
}


function ProductPopup(model,brand) {
    var popUp = window.open('/popups/product-overview.asp?model=' + model + '&brand=' + brand, 'productPopup', 'width=600,height=450,scrollbars=yes,resizable=yes,menubar=no,toolbar=no');
    popUp.focus();
}



function ViewAnimation(filename, width, height, bgColor) {
    var popUp = window.open('http://www.lennox.com/popups/animation-popup.asp?bgcolor=' + bgColor + '&filename=' + filename + '&width=' + width + '&height=' + height, 'animation', 'width=' + width + ',height=' + height + ',scrollbars=no,resizable=yes,menubar=no,toolbar=no');
    popUp.focus();
}

function popupWindow(uri, width, height) {
    var popUp = window.open(uri, 'popup', 'width=' + width + ',height=' + height + ',scrollbars=no,resizable=yes,menubar=no,toolbar=no');
    if (typeof popUp == 'object') { popUp.focus(); }
}

function popupScrollWindow(uri, width, height) {
    var popUp = window.open(uri, 'popup', 'width=' + width + ',height=' + height + ',scrollbars=yes,resizable=yes,menubar=yes,toolbar=yes');
    if (typeof popUp == 'object') { popUp.focus(); }
}


// This is just for doing a numerical sort
function numberOrder(a, b) {
    return a - b;
}



// This function is used to make sure that required form fields have values.
//    Field_Name: name of a form field in the form of document.form_name.form_field_name that will be validated.
//    Error_Message: this is the alert error message that will be displayed to the user.
function Has_Value(Field_Name, Error_Message) {
    var text;

    text = Field_Name.value;

    while(text.search(/\s/) > -1) {
        text = text.replace(/\s/, "");
    }
    
    if(text == 0) {
        alert(Error_Message);
        Field_Name.focus();
        return false;   
    }
    return true;
}

// IS_VALID_EMAIL( emailaddy )
// Returns TRUE if Email is valid and FALSE if NOT VALID
function Is_Valid_Email( emailaddy ){
    var tempchar;       // temp holder
    var atPos;          // string position holder
    var periodPos;      // position of the period in string
    var invalchar = "/:,;"; // not valid email characters
    // if the email string is empty return false
    //if( Is_Empty( emailaddy ) ){ return false; }
    // Loop through each invalid character
    for( count = 0; count < invalchar.length; count++ ){
        // Pull one character out of the string
        tempchar = invalchar.charAt( count );
        // If an invalid character is found return false
        if( emailaddy.indexOf( tempchar, 0 ) > -1 ){
            return false;
        }
    }
    // find and store the position of the at sign
    atPos = emailaddy.indexOf( "@", 1 );
    // If no at sign is in the string return false
    if( atPos == -1 ){ return false; }
    // If at sign is the last character in the string return false
    if( emailaddy.indexOf( "@", atPos + 1 ) > -1 ){ return false; }
    // Find and store the position of the period in the email string
    periodPos = emailaddy.indexOf(".", atPos);
    // If there is no period in the string return false
    if( periodPos == -1 ){ return false; }
    // If the period is less than 3 characters from
    // the end of the string return false
    if( periodPos + 3 > emailaddy.length ){ return false; }
    // all is well this is a valid email address so return true
    return true;
}
// END OF FUNCTION

function Is_Valid_Date(Field_Name, Error_Message)
    //This function will validate a form date field to make sure that its in the proper
    //format.  It will accept dates in the following format: mm/dd/yyyy || m/dd/yyyy || m/d/yy || 
    //  m/dd/yy || mm/d/yy || any valid date that is delemitted by the '/' symbol.
    //Field_Name: name of a form field in the form of document.form_name.form_field_name that will be validated.
    //Error_Message: this is the alert error message that will be displayed to the user.
    {
        if (!Is_Date(Field_Name, Error_Message))
            {
             alert(Error_Message);
             Field_Name.focus();
             return false;
            }
        //everything passed so...
        return true;
    }   
    
function Is_Date(Field_Name)
    {
    //Returns true if value is a date format or is NULL
    //otherwise returns false   

    if (Field_Name.value.length == 0)
    return true;

    //Returns true if value is a date in the mm/dd/yyyy format
    isplit = Field_Name.value.indexOf('/');

    if (isplit == -1 || isplit == Field_Name.value.length)
        {
                 return false;
                }

    sMonth = Field_Name.value.substring(0, isplit);

    if (sMonth.length == 0)
    {
         return false;
        }

    isplit = Field_Name.value.indexOf('/', isplit + 1);

    if (isplit == -1 || (isplit + 1 ) == Field_Name.value.length)
        {
                 return false;
                }

        sDay = Field_Name.value.substring((sMonth.length + 1), isplit);

    if (sDay.length == 0)
    {
         return false;
        }

    sYear = Field_Name.value.substring(isplit + 1);

    if (!_CF_checkinteger(sMonth)) //check month
        {
                 return false;
                }
    else
    if (!_CF_checkrange(sMonth, 1, 12)) //check month
        {
                 return false;
                }
    else
    if (!_CF_checkinteger(sYear)) //check year
        {
                 return false;
                }
    else
    if (!_CF_checkrange(sYear, 0, 9999)) //check year
        {
                 return false;
                }
    else
    if (sYear.length != 4)
            {
            return false;
            }
    if (!_CF_checkinteger(sDay)) //check day
        {
                 return false;
                }
    else


    if (!_CF_checkday(sYear, sMonth, sDay)) // check day
        {
                 return false;
                }
    else
        return true;
    }







function _CF_checkday(checkYear, checkMonth, checkDay)
    {

        maxDay = 31;

        if (checkMonth == 4 || checkMonth == 6 ||
                        checkMonth == 9 || checkMonth == 11)
                maxDay = 30;
        else
        if (checkMonth == 2)
        {
                if (checkYear % 4 > 0)
                        maxDay =28;
                else
                if (checkYear % 100 == 0 && checkYear % 400 > 0)
                        maxDay = 28;
                else
                        maxDay = 29;
        }

        return _CF_checkrange(checkDay, 1, maxDay); //check day
    }

function _CF_checkinteger(Field_Name)
    {
    //Returns true if value is a number or is NULL
    //otherwise returns false   

    if (Field_Name.length == 0)
        return true;

    //Returns true if value is an integer defined as
    //   having an optional leading + or -.
    //   otherwise containing only the characters 0-9.
        var decimal_format = ".";
        var check_char;

    //The first character can be + -  blank or a digit.
        check_char = Field_Name.indexOf(decimal_format)
    //Was it a decimal?
    if (check_char < 1)
        return _CF_checknumber(Field_Name);
    else
        {
         return false;
        }
    }

function _CF_numberrange(Field_Name, min_value, max_value)
    {
    // check minimum
    if (min_value != null)
        {
        if (Field_Name < min_value)
                {
                 return false;
                }
        }

    // check maximum
    if (max_value != null)
        {
        if (Field_Name > max_value)
                {
                 return false;
                }
        }
        
    //All tests passed, so...
    return true;
    }

function _CF_checknumber(Field_Name)
    {
    //Returns true if value is a number or is NULL
    //otherwise returns false   

    if (Field_Name.length == 0)
        return true;

    //Returns true if value is a number defined as
    //   having an optional leading + or -.
    //   having at most 1 decimal point.
    //   otherwise containing only the characters 0-9.
        var start_format = " .+-0123456789";
        var number_format = " .0123456789";
        var check_char;
        var decimal = false;
        var trailing_blank = false;
        var digits = false;

    //The first character can be + - .  blank or a digit.
        check_char = start_format.indexOf(Field_Name.charAt(0))
    //Was it a decimal?
        if (check_char == 1)
            decimal = true;
        else if (check_char < 1)
                {
                 return false;
                }
        
        //Remaining characters can be only . or a digit, but only one decimal.
        for (var i = 1; i < Field_Name.length; i++)
        {
                check_char = number_format.indexOf(Field_Name.charAt(i))
                if (check_char < 0)
                        {
                         return false;
                        }
                else if (check_char == 1)
                {
                        if (decimal)            // Second decimal.
                                {
                                 return false;
                                }
                        else
                                decimal = true;
                }
                else if (check_char == 0)
                {
                        if (decimal || digits)  
                                trailing_blank = true;
        // ignore leading blanks

                }
                else if (trailing_blank)
                        {
                         return false;
                        }
                else
                        digits = true;
        }       
    //All tests passed, so...
    return true
    }

function _CF_checkrange(Field_Name, min_value, max_value)
    {
    //if value is in range then return true else return false

    if (Field_Name.length == 0)
        return true;


    if (!_CF_checknumber(Field_Name))
        {
         return false;
        }
    else
        {
        return (_CF_numberrange((eval(Field_Name)), min_value, max_value));
        }
        
    //All tests passed, so...
    return true;
    }



function ValidatePostal() {
    if( (document.LocateForm.NewPostalCode.value.length < 5) || (document.LocateForm.NewPostalCode.value.length > 7) || (document.LocateForm.NewPostalCode.value == 'enter postal code') ) { return false; }
    else return true;
}


function Has_Radio_Value(field,error_message)
{
  
  var radio_choice = false;
  
  for (counter = 0; counter < field.length; counter++)
  {
    if (field[counter].checked)
      radio_choice = true; 
  }

  if (!radio_choice) {
    alert(error_message);
    
    return false;
  }

return true;
}






/**
* Appends a message into a div at the bottom of the current page
*
* This debug function displays plain-text debugging messages in a
* special div at the end of a document.  It is a useful alternative
* to using alert() to display debugging messages.
*
* From: Flanagan, David. _JavaScript: The Definitive Guide._ O'Reilly
*/
function debug(msg) {
   // If we haven't already created a box within which to display
   // our debugging messages, then do so now.  Note that to avoid
   // using another global variable, we store the box node as a property
   // of this function.
   if (!debug.box) {
       // Create a new <div> element
       debug.box = document.createElement("div");
       // Specify what it looks like using CSS style attributes
       debug.box.setAttribute("style",
                              "background-color: white; " +
                              "font-family: monospace; " +
                              "border: solid black 3px; " +
                              "padding: 10px;");
              // And append our new <div> element to the end of the document
       document.body.appendChild(debug.box);

       // Now add a title to our <div>.  Note that the innerHTML property is
       // used to parse a fragment of HTML and insert it into the document.
       // innerHTML is not part of the W3C DOM standard, but it is supported
       // by Netscape 6 and Internet Explorer 4 and later.  We can avoid
       // the use of innerHTML by explicitly creating the <h1> element,
       // setting its style attribute, adding a Text node to it, and
       // inserting it into the document, but this is a nice shortcut
       debug.box.innerHTML =
           "<h1 style='text-align:center'>Debugging Output</h1>";
   }

   // When we get here, debug.box refers to a <div> element into which
   // we can insert our debugging message.
   // First, create a <p> node to hold the message
   var p = document.createElement("p");
   // Now create a text node containing the message, and add it to the <p>
   p.appendChild(document.createTextNode(msg));
   // And append the <p> node to the <div> that holds the debugging output
   debug.box.appendChild(p);
}








/*Show hide */
function getRef(obj) {
  if(typeof obj == "string") { obj = document.getElementById(obj); }
  else if (typeof obj == "object") { obj = obj; }

  return obj;
}

function setStyle(obj, style, value) {
  getRef(obj).style[style] = value;
}

function getStyle(obj, style) {
  return getRef(obj).style[style];
}


function makeVisible(element) {
    setStyle(element, 'visibility', 'visible');
}

function makeInvisible(element) {
    setStyle(element, 'visibility', 'hidden');
}


function show(elem) {
  setStyle(elem,'display','inline');
  setStyle(elem,'visibility','visible');
}

function hide(elem) {
  setStyle(elem,'display','none');
  setStyle(elem,'visibility','hidden');
}

function hide2(elem) {
	Test(getRef(elem));
	if (getStyle(elem, 'visibility') == "hidden") {
		setStyle(elem,'display','block');
		setStyle(elem,'visibility','visible');
	}
	else {
		setStyle(elem,'display','none');
		setStyle(elem,'visibility','hidden');
	}
}



function showHighlight(elem) {
  hideOtherDivs(elem,"highlight_");
  show("highlight_" + elem);

}


/*Loop to close others*/ 

function Test(elem) {
var ps = window.document.getElementsByTagName("div");
	for(var i=0; i < ps.length; i++) {
		if(ps[i].id.substring(0,4) == "faq_") {
			if(elem.id != ps[i].id) {
				if ( ps[i].style.display=="block" ) {
					ps[i].style.display="none";
					ps[i].style.visibility="hidden";
				}
			}
		}
     }
}

function hideOtherDivs(elem,foo) {
var ps = window.document.getElementsByTagName("div");
	for(var i=0; i < ps.length; i++) {
		
		if(ps[i].id.substring(0,foo.length) == foo) {
			
			if(elem.id != ps[i].id) {
				if ( ps[i].style.visibility=="visible" ) {
					ps[i].style.display="none";
					ps[i].style.visibility="hidden";
				}
			}
		}
     }
}