function openwin(URL, WindowName, height, width) {
	window.open(URL,WindowName,"toolbar=no,location=no,resizable=yes,directories=no,status=no,menubar=no,scrollbars=yes,width="+width+",height="+height+"");
}

function Show(el_id){
	var el = document.getElementById(el_id);
	if(!el.style.display){
		el.style.display = "block";
	}
	else{
		if(el.style.display = "none"){
			el.style.display = "block";
		}
	}
}
function Hide(el_id){
	var el = document.getElementById(el_id);
	if(el.style.display){
		if(el.style.display = "block"){
			el.style.display = "none";
		}
	}
}