// JavaScript Document
//window.onload= initAll;
	var xhr = false;
	var xPos, yPos;
	
	
	/*function initAll(){
		var alllinks = document.getElementsByTagName("a");
		
		for (var i = 0; i < alllinks.length; i++){
			alllinks[i].onmouseover = showPreview;
			alllinks[i].onmouseout = hidePreview;
		}
	}
	
	function showPreview(evt){
			if (evt) {
				var url = evt.target;
			}
			
			else {
				evt = window.event;
				var url = evt.srcElement;
			}
			xPos = evt.clientX;
			yPos = evt.clientY;
			
			makeRequest(url);
			
			
			return false;
	}
	
	function makeRequest(url){
		if (window.XMLHttpRequest){
			xhr = new XMLHttpRequest();
		}
		else {
			if (window.ActiveXObject){
				xhr = new ActiveXObject("Mircosoft.XMLHTTP");
			}
		}
		if (xhr) {
			xhr.onreadystatechange = showContents;
			xhr.open("GET", url , true);
			xhr.send(null);
			
		}
		else {
				alert("Sorry can't create request");
		}
	}
	
	function showContents(){
		var prevWin = document.getElementById("previewWin");
		if (xhr.readyState == 4){
			if (xhr.status == 200){
				prevWin.innerHTML = xhr.responseText;
			}
			else {
				prevWin.innerHTML = "preview Failed";
			}
			
			prevWin.style.top = parseInt(yPos) + 2 + "px";
			prevWin.style.left = parseInt(xPos) + 2 + "px";
			prevWin.style.visibility = "visible";
			prevWin.onmouseout = hidePreview;
			
		}
	}
	
	function hidePreview(){
		document.getElementById("previewWin").style.visibility = "hidden";
	}
	*/
	function showCourseList(course){
			closeAllBoxes();
			$('#' + course).slideDown("slow");
			//document.getElementById(course).style.display="block";
		
	}
	
	function hideCourseList(course){
		//document.getElementById(course).style.display="none";
		$('#' + course).slideUp("slow");
	}
	
	function closeAllBoxes(){
		/*var allBoxes = document.getElementsByTagName("div");
		for (i = 0; i < allBoxes.length;i++){
			if (allBoxes[i].className == "courseBox"){
				allBoxes[i].style.display = "none";
			}
		}*/
		
		$('div.courseBox').slideUp("slow");
	}