//var metaId = "";

var needToConfirm = false;
window.onbeforeunload = confirmExit;
function confirmExit()
{
	if (needToConfirm)
	{
		return "stuff and nonsense";
	}
}

var oldEvent = window.onload;

function setPageTimeout (sessionTime)
{
	window.setTimeout("window.location.href='_noSession.aspx'", sessionTime);
}

function toggleLayer ()
{
}


function checkUncheckAll(theElement) 
{
	var theForm = theElement.form, z = 0;
	for(z=0; z<theForm.length;z++)
	{
		if(theForm[z].type == 'checkbox' && theForm[z].name != 'checkall')
		{
			theForm[z].checked = theElement.checked;
		}
	}
}


/* functions that aren't yet used */
function isFormChanged() {

	var rtnVal = false; 
	var frm = document.forms[0];
	var ele = frm.elements;

	
	for ( i=0; i < ele.length; i++ ) {
		if ( ele[i].type.length > 0 ) {
			if ( isElementChanged( ele, i ) ) {
				rtnVal = true;
				break;
			}
		}
	}
	return rtnVal;
}



function isElementChanged( ele, i ) {

	var isEleChanged = false; 

	switch ( ele[i].type ) { 

		case "text" : 
			if ( ele[i].value != ele[i].defaultValue ) 
			{
				alert(escape(ele[i].value) + "\n" + ele[i].value + "\n" + ele[i].defaultValue);
				return true;
			}
			break;
		case "textarea" : 
			if ( escape(ele[i].value).replace(/%20/g,  " ").toLowerCase() != ele[i].defaultValue ) 
			{
				alert("A: " + escape(ele[i].value).replace(/%20/g,  " ").toLowerCase() + "\n" + "\nB: " + ele[i].defaultValue);
				return true;
			}
			break;
		case "radio" :
			val = "";
			if ( ele[i].checked != ele[i].defaultChecked ) return true;
			break;
		case "select-one" : 
			for ( var x =0 ; x <ele[i].length; x++ ) {
				if ( ele[i].options[ x ].selected 
				  != ele[i].options[ x ].defaultSelected ) 
					return true;
			}
			break;
		case "select-multiple" :
			for ( var x =0 ; x <ele[i].length; x++ ) {
				if ( ele[i].options[ x ].selected 
				  != ele[i].options[ x ].defaultSelected ) 
					return true;
			}
			break;
		case "checkbox" :
			if ( ele[i].checked != ele[i].defaultChecked ) return true;
		default:
			return false;
			break;
	}

}


function Querystring(qs) { // optionally pass a querystring to parse
	
	
	this.params = new Object()
	this.get=Querystring_get
	
	if (qs == null)
		qs=location.search.substring(1,location.search.length)

	if (qs.length == 0) return

// Turn <plus> back to <space>
// See: http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.13.4.1
	qs = qs.replace(/\+/g, ' ')
	var args = qs.split('&') // parse out name/value pairs separated via &
	
// split out each name=value pair
	for (var i=0;i<args.length;i++) {
		var value;
		var pair = args[i].split('=')
		var name = unescape(pair[0])

		if (pair.length == 2)
			value = unescape(pair[1])
		else
			value = name
		
		this.params[name] = value
	}
	
}

function Querystring_get(key, default_) {
	// This silly looking line changes UNDEFINED to NULL
	if (default_ == null) default_ = null;
	
	var value=this.params[key]
	if (value==null) value=default_;
	return value
}		



function addLoadEvent(func) {
	var oldonload = window.onload;
	
	if (typeof window.onload != 'function') 
	{
		window.onload = function() { func; }
	} 
	else 
	{
		window.onload = function() 
		{
			if (oldonload) 
			{
				oldonload();
			}
			func();
		}
	}
}

//** Top menu **/

function hideElement(element)
{
//	alert('removed');
	document.getElementById(element).style.display = 'none';
}

function menuHide(id)
{		
		if (chkObject('selectedLink'))
		{	
				if (id != "selectedLink")
				{
						$('selectedLink').style.backgroundImage = "none";
						$('selectedLink').getElementsByTagName("ul")[0].style.visibility = "hidden";
				}
		}
}

function menuShow(id)
{	
		if (chkObject('selectedLink'))
		{
				$('selectedLink').style.backgroundImage = 'url(app_themes/gilchrist/images/bgTopNav.gif)';
				$('selectedLink').getElementsByTagName("ul")[0].style.visibility = "visible";
		}
}	

function chkObject(theVal) 
{
		if (document.getElementById(theVal) != null) 
		{
				return true;
		} 
		else 
		{
				return false;
		}
}

/**************************************************/