function ChgSearch() {
			var FromUrl = document.referrer;
			var SerchStr = "";
			if (FromUrl) {
				if (FromUrl.indexOf("tw.search.yahoo.com") >= 0) {
					FromUrl = decodeURI(FromUrl);
					var cStrAry = FromUrl.split("&");
					var KeyWord = cStrAry[0].split("=");
					if (KeyWord[1]) {SerchStr = "Yahoo-" + KeyWord[1];}
				}
				if (FromUrl.indexOf("www.google.com.tw") >= 0) {
					FromUrl = decodeURI(FromUrl);
					if (FromUrl.indexOf("&") > 0) {
						var cStrAry = FromUrl.split("&");
						var KeyWord = cStrAry[1].split("=");
						if (KeyWord[1]) {SerchStr = "Google-" + KeyWord[1];}
					}
				}
			}
			return SerchStr;
		}