var ns4 = (document.layers)? true:false;
		var ie4 = (document.all)? true:false;
		
		function init(id) {
			if (ns4) block = document.layers[id];
			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";
				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";
			else if (ie4) document.all[id].style.visibility = "hidden";
			}
		}
	
		function placeLayer(id, nnTop, ieTop, nnTopMac, ieTopMac, nnLeft, ieLeft, nnLeftMac, ieLeftMac){
			var bname = navigator.appName;     
			var bplatform = navigator.platform;  
			if (bplatform == "Win32"){
				if (bname== "Netscape"){document.layers[id].top = nnTop; document.layers[id].left = nnLeft;
		  		}else{document.all[id].style.top = ieTop;document.all[id].style.left = ieLeft;}
			}else if (bplatform == "MacPPC"){
				if (bname== "Netscape"){document.layers[id].top = nnTopMac; document.layers[id].left = nnLeftMac;
		  		}else{document.all[id].style.top = ieTopMac; document.all[id].style.left = ieLeftMac;}
			}
		}