function MM_showHideLayers() { //v6.0
	var i,p,v,obj,args = MM_showHideLayers.arguments;
	
	for (i=0; i < (args.length - 2); i+=3) {
		if ((obj=MM_findObj(args[i])) != null) { 
			v = args[i+2];
		
			if (obj.style) { 
				obj = obj.style; 
				v = (v == 'show') ? 'visible' : (v == 'hide') ? 'hidden' : v; 
			}
			
			obj.visibility = v; 
			if (v === "visible") {
				obj.display = "block";
			} else {
				obj.display = "none";
			}
		}
	}
	
	
}