function toggleLayer( whichLayer ) {
			var elem, vis;

			for (i=0;i<=4;i=i+1) {
				if (whichLayer==('side_icons'+i)) {
					if( document.getElementById ) {
						elem = document.getElementById( whichLayer );
					} else if( document.all ) {
						elem = document.all[whichLayer];
					} else if( document.layers ) {
						elem = document.layers[whichLayer];
					}
					vis = elem.style;

					if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined) {
						vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
					}
					vis.display = (vis.display==''||vis.display=='block')?'none':'block';

				} else {
					if( document.getElementById ) {
						elem = document.getElementById( 'side_icons'+i );
					} else if( document.all ) {
						elem = document.all['side_icons'+i];
					} else if( document.layers ) {
						elem = document.layers['side_icons'+i];
					}
					vis = elem.style;

					if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined) {
						vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
					}
					vis.display = 'none';
				}
			}
		}

		function toggleCss() {
			var oLink = document.createElement("link")
			oLink.href = "mypath/mycss.css";
			oLink.rel = "stylesheet";
			oLink.type = "text/css";
			document.body.appendChild(oLink);
		}