platformMac=(navigator.appVersion.indexOf("Mac") != -1)?true:false;
			browserIE=(navigator.appName.charAt(0) == "M")?true:false;
			browserNS=(navigator.appName.charAt(0) == "N")?true:false;
			
			if (platformMac) {
				styleName = "common/stylesheet/macstyle.css";
			}
			else {
				if (browserIE) {
					styleName = "common/stylesheet/wiestyle.css";
				}
				else if (browserNS) {
					styleName = "common/stylesheet/wnsstyle.css";
				}
			}
			if (styleName != null) {
				document.writeln("<LINK REL=stylesheet HREF='"+styleName+"' TYPE='text/css'>");
			}