var img1 = new Image();
img1.src = 'images/menu/home_over.gif';
var img2 = new Image();
img2.src = 'images/menu/courses_over.gif';
var img3 = new Image();
img3.src = 'images/menu/resourses_over.gif';
var img4 = new Image();
img4.src = 'images/menu/about_over.gif';
var img5 = new Image();
img5.src = 'images/menu/contact_over.gif';
var img6 = new Image();
img6.src = 'images/menu/asist_over.gif.gif';
var img7 = new Image();
img7.src = 'images/menu/safetalk_over.gif';
var img8 = new Image();
img8.src = 'images/menu/oneinfour_over.gif';
var img9 = new Image();
img9.src = 'images/menu/recovery_over.gif';
var img10 = new Image();
img10.src = 'images/menu/selfinjury_over.gif';
var img11 = new Image();
img11.src = 'images/menu/courseprices_over.gif';
var img12 = new Image();
img12.src = 'images/menu/subprices_over.gif';
var img13 = new Image();
img13.src = 'images/textsizedecrease.gif';

var disappeardelay= 250;  //menu disappear speed onMouseout (in miliseconds)
var hidemenu_onclick= 'yes'; //hide menu when user clicks within menu?
var ie4=document.all;
var ns6=document.getElementById&&!document.all;

function dropdownmenu(obj, e, menuid, menuwidth)
{
	if (window.event) 
	{
		event.cancelBubble = true;
	}
	else if (e.stopPropagation) 
	{
		e.stopPropagation();
	}
	
	clearhidemenu();

	if (typeof dropmenuobj!="undefined")
	{
		if (document.getElementById(menuid) != dropmenuobj)
		{
			hidemenu();
		}
	}

	dropmenuobj = document.getElementById(menuid);

	showhide(dropmenuobj.style, e, "visible", "hidden");
	dropmenuobj.x = getposOffset(obj, "left");
	dropmenuobj.y = getposOffset(obj, "top") - 5;
	dropmenuobj.style.left = dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px";
	dropmenuobj.style.top = dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px";

	return false;
}

function clearhidemenu()
{
	if (typeof delayhide!="undefined")
	{
		clearTimeout(delayhide);
	}
}

function showhide(obj, e, visible, hidden)
{
	//dropmenuobj.style.left = dropmenuobj.style.top="-500px"
	
	if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
	{
		obj.visibility = visible;
	}
	else if (e.type=="click")
	{
		obj.visibility = hidden;
	}
}

function getposOffset(what, offsettype)
{
	var totaloffset = (offsettype=="left")? what.offsetLeft : what.offsetTop;
	var parentEl=what.offsetParent;
	while (parentEl!=null)
	{
		totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
		parentEl=parentEl.offsetParent;
	}
	return totaloffset;
}

function iecompattest()
{
	return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function clearbrowseredge(obj, whichedge)
{
var edgeoffset=0
if (whichedge=="rightedge"){
var windowedge=ie4 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth
}
else{
var topedge=ie4 && !window.opera? iecompattest().scrollTop : window.pageYOffset
var windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ //move up?
edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight
if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) //up no good either?
edgeoffset=dropmenuobj.y+obj.offsetHeight-topedge
}
}
return edgeoffset
}

function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function dynamichide(e){
if (ie4&&!dropmenuobj.contains(e.toElement))
delayhidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
delayhidemenu()
}

function hidemenu(e)
{
    if (typeof dropmenuobj!="undefined")
    {
        if (ie4||ns6) dropmenuobj.style.visibility = "hidden";
    }
    if (typeof dropsubmenuobj!="undefined")
    {
        if (ie4||ns6) dropsubmenuobj.style.visibility = "hidden";
    }    
}

function delayhidemenu(){
if (ie4||ns6)
delayhide=setTimeout("hidemenu()",disappeardelay)
}

if (hidemenu_onclick=="yes") document.onclick = hidemenu;

function swapimage(oldimg,newimage)
{
	oldimg.src = newimage;	
}

function dropdownsubmenu(obj, e, menuid, menuwidth)
{
	/*if (window.event) 
	{
		event.cancelBubble = true;
	}
	else if (e.stopPropagation) 
	{
		e.stopPropagation();
	}
	*/
	clearhidesubmenu();

	if (typeof dropsubmenuobj!="undefined")
	{
		if (document.getElementById(menuid) != dropsubmenuobj)
		{
			hidesubmenu();
		}
	}

	dropsubmenuobj = document.getElementById(menuid);

	showhide(dropsubmenuobj.style, e, "visible", "hidden");
	
    dropsubmenuobj.x = getposOffset(obj, "left") + 151;
    dropsubmenuobj.y = getposOffset(obj, "top") - 27;
	
	dropsubmenuobj.style.left = dropsubmenuobj.x-clearsubbrowseredge(obj, "rightedge")+"px";
	dropsubmenuobj.style.top = dropsubmenuobj.y-clearsubbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px";

	return false;
}

function clearhidesubmenu()
{
	if (typeof delaysubhide!="undefined")
	{
		clearTimeout(delaysubhide);
	}
	if (typeof delayhide!="undefined")
	{
		clearTimeout(delayhide);
	}	
}

function clearsubbrowseredge(obj, whichedge)
{
    var edgeoffset = 0;
    if (whichedge == "rightedge")
    {
        var windowedge = ie4 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15;
        dropsubmenuobj.contentmeasure = dropsubmenuobj.offsetWidth;
        if (windowedge-dropsubmenuobj.x < dropsubmenuobj.contentmeasure) edgeoffset = dropsubmenuobj.contentmeasure-obj.offsetWidth;
    }else{
        var topedge=ie4 && !window.opera? iecompattest().scrollTop : window.pageYOffset;
        var windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18;
        dropsubmenuobj.contentmeasure=dropsubmenuobj.offsetHeight;
        if (windowedge-dropsubmenuobj.y < dropsubmenuobj.contentmeasure)
        {
            edgeoffset=dropsubmenuobj.contentmeasure+obj.offsetHeight;
            if ((dropsubmenuobj.y-topedge)<dropsubmenuobj.contentmeasure) edgeoffset=dropsubmenuobj.y+obj.offsetHeight-topedge;
        }
    }
    return edgeoffset
}

function dynamichidesub(e)
{
    if (ie4&&!dropsubmenuobj.contains(e.toElement))
    { 
        delayhidesubmenu();
        delayhidemenu();
    }else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget)){
        delayhidesubmenu();
        delayhidemenu();
    }
}

function hidesubmenu(e)
{
    if (typeof dropsubmenuobj!="undefined")
    {
        if (ie4||ns6) dropsubmenuobj.style.visibility = "hidden";
    }
}

function delayhidesubmenu()
{
    if (ie4||ns6) delaysubhide=setTimeout("hidesubmenu()",disappeardelay)
}

var largefontsize = false;

function fontsize()
{
    if (largefontsize == true)
    {
        document.body.style.fontSize = '0.95em';
        if (document.getElementById('textsizelink'))
        {
            document.getElementById('textsizelink').innerHTML = 'LARGE TEXT';
        }
        if(document.getElementById('textsizeimg'))
        {
            document.getElementById('textsizeimg').src = 'images/textsizeincrease.gif';
        }
        largefontsize = false;  
        rememberChoice("small");     
    }
    else
    {
        document.body.style.fontSize = '1.5em';
        if (document.getElementById('textsizelink'))
        {
            document.getElementById('textsizelink').innerHTML = 'SMALL TEXT';
        }
        if(document.getElementById('textsizeimg'))
        {
            document.getElementById('textsizeimg').src = 'images/textsizedecrease.gif';
        }
        largefontsize = true;
        rememberChoice("large"); 
    } 
    
}

//This function tells the server to remember the users font size for when they change pages / refresh.
var req = null

function rememberChoice(size) 
{
    var url = 'textsize.asp?size=' + size + '&date=' + escape(Date());

	if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
		req.onreadystatechange = processReqChange;
		req.open("GET", url, true);
		req.send(null);
	} else if (window.ActiveXObject) {
		req = new ActiveXObject("Microsoft.XMLHTTP");
		if (req) {
			req.onreadystatechange = processReqChange;
			req.open("GET", url, true);
			req.send();
		}
	}
}

function processReqChange() 
{
	// only if req shows "complete"
	if (req.readyState == 4) {
		// only if "OK"
		if (req.status == 200) {
			if (req.responseText == 'True')
			{
				//doNothing();
			}
		}
	}
}