/*
 * Clear Default Text: functions for clearing and replacing default text in
 * <input> elements.
 */
function registerClearDefaultItem(id,DefaultText) {
	
	try{
		theInput = document.getElementById(id);          
   		addEvent(theInput, 'focus', clearDefaultText, false);
		addEvent(theInput, 'blur', replaceDefaultText, false);

		/* Save the current value */
		if (theInput.value != '') {
			
			theInput.defaultText = DefaultText;
		}
	}catch(e){}
}

function clearDefaultText(e) {
    var target = window.event ? window.event.srcElement : e ? e.target : null;
    if (!target) return;
    
    if (target.value == target.defaultText) {
        target.value = '';
    }
}

function replaceDefaultText(e) {
    var target = window.event ? window.event.srcElement : e ? e.target : null;
    if (!target) return;
    
    if (target.value == '' && target.defaultText) {
        target.value = target.defaultText;
    }
}
/*
 * Event Handling: Cross Browser compliant event handling
 * <input> elements.
 */
function addEvent(element, eventType, lamdaFunction, useCapture) {
	try{
		if (element.addEventListener) {
			element.addEventListener(eventType, lamdaFunction, useCapture);
			return true;
		} else if (element.attachEvent) {
			var r = element.attachEvent('on' + eventType, lamdaFunction);
			return r;
		} else {
			return false;
		}
    }catch(e){}
}

function killEvent(eventObject) {
    if (eventObject && eventObject.stopPropagation) {
        eventObject.stopPropagation();
    }
    if (window.event && window.event.cancelBubble ) {
        window.event.cancelBubble = true;
    }    
    if (eventObject && eventObject.preventDefault) {
        eventObject.preventDefault();
    }
    if (window.event) {
        window.event.returnValue = false;
    }
}

function cancelEventSafari() {
    return false;        
}

function GetEventSrcElement(eventElement){
    if (eventElement.srcElement)
    {
        return eventElement.srcElement
    }
    // Netscape and Firefox
    else if (eventElement.target)
    {
        return eventElement.target
    }
}

//General
function ContensisSubmitFromTextbox(evt,SubmitButton){
	var btn = document.getElementById(SubmitButton)
	if (document.all){
		if (evt.keyCode == 13){
			evt.returnValue=false;
			evt.cancel = true;
			btn.click();
			}

	}
	else if (document.getElementById){
		if (evt.which == 13){
			evt.returnValue=false;
			evt.cancel = true;
			btn.click();
			}
	}
	else if(document.layers){
		if(evt.which == 13){
		evt.returnValue=false;
		evt.cancel = true;
		btn.click();
		}
	}
}
//used for linkbuttons etc.
function registerSubmitOnReturn(id,eventTarget){
    var Textbox = document.getElementById(id);
    if(Textbox){
        Textbox.LinkButtonID = eventTarget
        addEvent(Textbox,'keypress',handleSubmitOnReturn,false)
    }
}
function handleSubmitOnReturn(e){
    if(e.keyCode==13){
        //alert("Submit")
        e.cancelBubble = true;
        e.returnValue=false;
        var el = GetEventSrcElement(e)
        __doPostBack(el.LinkButtonID,'')
    }
}


function URLEncode(value)
{
	// The Javascript escape and unescape functions do not correspond
	// with what browsers actually do...
	var SAFECHARS = "0123456789" +					// Numeric
					"ABCDEFGHIJKLMNOPQRSTUVWXYZ" +	// Alphabetic
					"abcdefghijklmnopqrstuvwxyz" +
					"-_.!~*'()";					// RFC2396 Mark characters
	var HEX = "0123456789ABCDEF";

	var plaintext = value;
	var encoded = "";
	for (var i = 0; i < plaintext.length; i++ ) {
		var ch = plaintext.charAt(i);
	    if (ch == " ") {
		    encoded += "+";				// x-www-urlencoded, rather than %20
		} else if (SAFECHARS.indexOf(ch) != -1) {
		    encoded += ch;
		} else {
		    var charCode = ch.charCodeAt(0);
			if (charCode > 255) {
			    alert( "Unicode Character '" 
                        + ch 
                        + "' cannot be encoded using standard URL encoding.\n" +
				          "(URL encoding only supports 8-bit characters.)\n" +
						  "A space (+) will be substituted." );
				encoded += "+";
			} else {
				encoded += "%";
				encoded += HEX.charAt((charCode >> 4) & 0xF);
				encoded += HEX.charAt(charCode & 0xF);
			}
		}
	} // for
	return encoded;
}

//This is only required when email obfuscation is enabled
function UnObfuscateHyperlinks(){
    var links = document.getElementsByTagName('a');
    for (var l = 0 ; l < links.length ; l++) {
      links[l].onclick = function() {
                        link_click(this);
                        }
    }
}


function link_click(anchor) {
  var href = anchor.getAttribute('href');
  var address = href.replace(/.*mailcontacts\//,'');
  address = address.replace(/\+\+/,'@');
  address = address.replace(/\+/g,'.');
  if (href != address) {
    anchor.setAttribute('href','mailto:' + address);
  }
}

function IEFixBackgroundImageFlicker(){
try { 
     document.execCommand('BackgroundImageCache', false, true); 
    } catch(e) {}
}