var ns4 = (document.layers)? true:false;
		var ie4 = (document.all)? true:false;
		var ns6 = (navigator.userAgent.indexOf("Netscape6")>-1 && this.dom)?true:false;
		var ns7 = (navigator.userAgent.indexOf("Netscape/7.0")>-1 && this.dom)?true:false;
		
		
		function init(id) {
			if (ns4) block = document.layers[id];
			if (ns6 || ns7) block = document.getElementById;
			if (ie4) block = document.all[id].style;
		}	
		
		function showObject(id) {
			var n = showObject.arguments.length;
			for(i=0; i<n; ++i) {
			
				id = arguments[i];
			
				if (ns4) document.layers[id].visibility = "show";
				if (ns6 || ns7) document.getElementById(id).style.visibility = "visible";
				else if (ie4) document.all[id].style.visibility = "visible";
			}
		}
		
		function hideObject(id) {
			var n = hideObject.arguments.length;
			for(i=0; i<n; ++i) {
			
			id = arguments[i];
		
			if (ns4)document.layers[id].visibility = "hide";
			if (ns6 || ns7) document.getElementById(id).style.visibility =  "hidden";
			else if (ie4) document.all[id].style.visibility = "hidden";
			}
		}