var timer = new Array('');

function popthis(url){
 window.open(url,'USUMAP','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=500,height=300');
}

function mouseIn(name){
	if(timer[0] == name){
		clearTimeout(timer[1]);
	}
		if(name != ''){
		show(name);
	}
}

function mouseLeave(name){
	if(timer[0] != ''){
		clearTimeout(timer[1]);
	}
	timer[0] = name;
	timer[1] = setTimeout(doHide, 500);
}

function doHide(){
	if(timer[0] != ''){
		hide(timer[0]);
		timer[0] = '';
	}
}