var menuTop = 45;
var menuLeft = 400;

var domSMenu = null;
var oldDomSMenu = null;
var t = 0;
var lDelay = 3;
var lCount = 0;
var pause = 100;


function toggle(ct){
	objID = 'course' ;
	imgid = 'img' ;
	var str = document.getElementById(imgid).src;
	if(str.match('details_view.gif') ) {
		for(i=1; i<=ct; i++){
			objID = 'course' + i;
			document.getElementById(objID).style.display = 'block';
		}
		document.getElementById(imgid).src = 'details_hide.gif';
	}else{
		for(i=1; i<=ct; i++){
			objID = 'course' + i;
			document.getElementById(objID).style.display = 'none';
		}
		document.getElementById(imgid).src = 'details_view.gif';
	}
}




function popMenu(menuNum){
	if (isDHTML) {
		// Sets the previous menu's visibility to hidden
		t = 2;
		if (oldDomSMenu) {
			oldDomSMenu.visibility = 'hidden'; 
			oldDomSMenu.zIndex = '0'; 
			t = 2; 
			lCount = 0;
		}

		// Defines the DOMs of the menu objects
		var idMenu = 'menuHead';
		var domMenu = findDOM(idMenu,0);

		var idMenuOpt = 'menuHead' + menuNum;
		var domMenuOpt = findDOM(idMenuOpt,0);		

		var idSMenu = 'menu' + menuNum;
		var domSMenu = findDOM(idSMenu,1);

		// Defines the positions of the sub-menus
		if (isID || isAll) { 	
			var menuLeft = (domMenu.offsetLeft) + (domMenuOpt.offsetLeft) + 0;
			var menuTop = (domMenu.offsetTop) + (domMenu.offsetHeight) + 1;
		}
		if (isLayers) {
			var menuLeft = document.layers[idMenu].layers[idMenuOpt].pageX - 5;
			var menuTop = domMenu.pageY + domMenu.clip.height - 5;
		}

		if (oldDomSMenu != domSMenu) {	
			// Positions and shows the menu
			domSMenu.left = menuLeft; 
			domSMenu.top = menuTop;
			domSMenu.visibility = 'visible';
			domSMenu.zIndex = '100';
			oldDomSMenu = domSMenu;
		} else { 
			// Resets oldDom if it is the same as the current DOM
			oldDomSMenu = null; 
		}
	} else { 
		// Returns a 'null' value for non-DHTML Browsers 
		return null; 
	}

}

function delayHide() {
	// Checks to see if there is a menu showing and whether 
	// the global variable 't' has been set to 0
	if ((oldDomSMenu) && (t == 0)) {
		// Hides the old menu, resets menu conditions, 
		// and stops the function running
		oldDomSMenu.visibility = 'hidden'; 
		oldDomSMenu.zIndex = '0';
		oldDomSMenu = null;
		lCount = 0; 
		return false;
	}

	// Interupts the function if another menu is opened
	if (t == 2) { 
		lCount = 0; return false; 
	}

	// Repeats the function adding 1 to lCount each time until 
	// lCount is equal to lDelay and then sets 't' to 0 so that 
	// the menu will hide when it runs again
	if (t == 1) { 
		lCount = lCount + 1;
		if (lDelay <= lCount) { 
			t = 0; 
		}
		if (lDelay >= lCount) { 
			setTimeout('delayHide(' + t + ')', pause);
		}
	}
}