var layerLeft = 90;
var layerTop = 178;
var foo = window.document;
var foo2 = window;
var nav = foo.layers;
var ex = foo.all;

function dropMenu(menuName,on) {
	if (on) {
		if (nav) {
			foo.layers['popUp'].visibility = "show";
			if (window.innerWidth<=700) {
				foo.layers['popUp'].left = layerLeft;
			} else if (window.innerWidth>700) {
				foo.layers['popUp'].left = ((window.innerWidth-700)/2)+layerLeft;
			}
			foo.layers['popUp'].top = layerTop;
		} else if (ex) {
			if (document.body.clientWidth<=700) {
			foo.all['popUp'].style.pixelLeft = layerLeft;
			} else if (document.body.clientWidth>700) {
			foo.all['popUp'].style.pixelLeft = ((document.body.clientWidth-700)/2)+layerLeft;
			}
			foo.all['popUp'].style.pixelTop = layerTop;
			foo.all['popUp'].style.visibility = "visible";
		}
	} else {
		if (nav) {
			foo.layers['popUp'].visibility = "hide";
		} else if (ex) {
			foo.all['popUp'].style.visibility = "hidden";
		}
	}
}