var timer = "";
var openMenu = null;
var canMenuBeClosed = true;

function clearTimer(){
	window.clearTimeout(timer);
}

function tryToClose(){
	var funcToCall = "canMenuBeClosed = true"
	timer = window.setTimeout(funcToCall, 400);
}

/**Hides the previously opened menu.**/

function showMenu(id, objPos){
	if(openMenu != id){
		 hideMenu(openMenu);
	}
	if(document.getElementById){
		clearTimer();
		openMenu = id;
		canMenuBeClosed = false;

		var x = 0;
		var y = 0;

/** To set an offset value, add the number (or subtract) the number of pixels to either the x or y values.  (i.e.: x = [getElementLeft(objPos)-1])**/
		if(openMenu == 'faculty_menu' ){
			x = [getElementLeft(objPos)-124];
			y = [getElementBottom(objPos)-4];
		}else {if(openMenu == 'centers_menu' ){
			x = [getElementLeft(objPos)-201];
			y = [getElementBottom(objPos)-4];
		}else {if(openMenu == 'giving_menu' ){
			x = [getElementLeft(objPos)-85];
			y = [getElementBottom(objPos)-4];
		}else {if(openMenu == 'about_krannert_menu' ){
			x = [getElementLeft(objPos)+1];
			y = [getElementBottom(objPos)-4];
		}else{
			x = [getElementLeft(objPos)-2];
			y = [getElementBottom(objPos)-4];
		}
		}
		}
		}
		
		setElementProperty(id, 'display', 'block');
		setElementProperty(id, 'left', x + "px");
		setElementProperty(id, 'top', y + "px");
	}
}

function hideMenu(id){
	setElementProperty(id, 'display', 'none');
	openMenu = null;
}

function getMousePos(event){
	var x, y;
	if(window.event){
		x = window.event.clientX;
		y = window.event.clientY;
		if (document.documentElement && document.documentElement.scrollTop){
			y+=document.documentElement.scrollTop;
		} else {
			y+=document.body.scrollTop;
		}
	} else {
		x = event.pageX;
		y = event.pageY;
	}

	if(openMenu != null){
		var testInside = isInside(x, y, openMenu);
		if(!testInside && canMenuBeClosed == true){
			hideMenu(openMenu);
		}
		if(testInside){
			canMenuBeClosed = true;
			clearTimer();
		}
	}
}

function isInside(xMouse, yMouse, id){
	if( (id != null) && (xMouse >= getElementLeft(id)) && (xMouse <=getElementRight(id)) && (yMouse >= getElementTop(id)) && (yMouse <= getElementBottom(id)) ){
		return true;
	} else {
		return false;
	}
}

window.onload = function() {
	document.onmousemove = getMousePos;
}

function switchDisplay(elm){
	var elm = elm.parentNode.nextSibling;
	while(elm.nodeType == 3){
		elm = elm.nextSibling;
	}
	
	var elmStyle = getElementProperty(elm, "display")

	if((elmStyle == "none") || (elmStyle == "") || (elmStyle == null)){
		setElementProperty(elm, "display", "block");
		return;
	}
	if(elmStyle == "block"){
		setElementProperty(elm, "display", "none");
		return;
	}
}

/** rolloverfunction NEW SITE**/
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}