var timeid;
var lastmenu;

function showmenu(id,offx){
	if (lastmenu == id) 
		window.clearTimeout(timeid);
	document.getElementById(id +"a").style.left= offx;
	document.getElementById(id +"a").style.top= "17px";
	document.getElementById(id + "a").style.visibility= "visible";
	lastmenu = id
}

function hidemenu(id){
	timeid = window.setTimeout('document.getElementById("' + (id + "a") + '").style.visibility= "hidden";lastmenu="";',200);	
}

function mouseout(id){
	timeid = window.setTimeout('document.getElementById("' + (id + "a") + '").style.visibility= "hidden";lastmenu="";',200);	
}

function mouseover(id){
	if(timeid)window.clearTimeout(timeid);
}

function ShowCourses(str){
	var LeftPosition = (screen.width) ? (screen.width-555)/2 : 0;
	var TopPosition = (screen.height) ? (screen.height-500)/2 : 0;
	
	pop = window.open("../../common/showcourses.php?path=" + str ,"pop","left=" + LeftPosition + " ,top=" + TopPosition + " , scrollbars=yes, width=555, height=400");
	pop.focus();
	return false;
}

function toggle(id){
	if (document.getElementById(id).style.display == 'none')
		document.getElementById(id).style.display='block';
	else
		document.getElementById(id).style.display='none';
}