function ddVis(evt,id,vh) {
	if (vh==0) {
		document.getElementById(id).className = "invisB ddMenu";
		document.getElementById('openMenu').value = "";
	} else {
		var tOP = evt.clientY +20+"px";
		var leFT = evt.clientX +"px";
		document.getElementById(id).className = "ddMenu";
		document.getElementById(id).style.top = tOP;
		document.getElementById(id).style.left = leFT;
		var currOp = document.getElementById('openMenu').value;
		if (currOp!="") {
			document.getElementById(currOp).className = "invisB ddMenu";
		}
		document.getElementById('openMenu').value = id;
	} 	
}