var isDHTML = 0;
var isID = 0;
var isAll = 0;
var isLayers = 0;

if (document.getElementById){
	isID = 1; isDHTML = 1;
	}
else {
	if (document.all) {
		isAll = 1; isDHTML = 1;
		}
		else {
			browserVersion = parseInt(navigator.appVersion);
			if ((navigator.appName.indexOf('Netscape') != -1) && (browserVersion == 4)) {
			isLayers = 1; isDHTML = 1;
		}
	}
}

function findDOM(objectID,withStyle) {
	if (withStyle == 1) {
		if (isID) {
			return (document.getElementById(objectID).style);
		}
		else { 
			if (isAll) {
				return (document.all[objectID].style);
			}
			else {
				if (isLayers) { 
					return (document.layers[objectID]);
				}
			};
		}
	}
	else {
	if (isID) { return (document.getElementById(objectID)) ; }
	else { 
		if (isAll) { return (document.all[objectID]); }
	else {
		if (isLayers) { return (document.layers[objectID]); }
	};}
	}
}

function toggleClamShellMenu(objectID) {
if (isAll || isID) {
	domStyle = findDOM(objectID,1);
	if (domStyle.display.toUpperCase()=='BLOCK'){
		domStyle.display='none';
	}
	else {
		domStyle.display='block';
	}
}
else {
destination = menu.htmlbis;
self.location = destination;
}
return;
}