function getWebParam(){
	var cs = document.createElement("link");
	var ret="";
	cs.rel = "stylesheet";
	cs.type = "text/css";
	
	if( navigator.userAgent.indexOf("MSIE 6") !== -1 ){
		cs.href = "./lib/css/IE6.css";
		ret = "IE6";
	}
	else if( navigator.userAgent.indexOf("MSIE 7") !== -1 ){
		cs.href = "./lib/css/IE7.css";
		ret = "IE7";
	}
	else if( (navigator.userAgent.indexOf("MSIE 8") !== -1) || (navigator.userAgent.indexOf("Opera") !== -1) ){
		cs.href = "./lib/css/IE8.css";
		ret = "IE8";
	}
	else if( navigator.userAgent.indexOf("Firefox") !== -1 ){
		var uName = navigator.userAgent.toUpperCase();
		var	versionStr=uName.indexOf("FIREFOX/",0);
		var version = parseFloat(uName.substring(versionStr+8,versionStr+8+3));
	
		if( version <= 2 ){
			cs.href = "./lib/css/Firefox2.css";
		}else if( version >= 3 ){
			cs.href = "./lib/css/Firefox.css";		  
		}
		ret = "FireFox";
	}
	else if( navigator.userAgent.indexOf("Safari") !== -1 ){
		cs.href = "./lib/css/safari.css";
		ret = "Safari";
	}
	else if( navigator.userAgent.indexOf("Opera") !== -1 ){
		cs.href = "./lib/css/opera.css";
		ret = "Opera";
	}
	else if( navigator.userAgent.indexOf("Chrome") !== -1 ){
		cs.href = "./lib/css/chrome.css";
		ret = "Chrome";
	}   
	else{
		return;
	}  
	document.getElementsByTagName('head')[0].appendChild(cs);
	
	return ret;
}