javascript实现动态CSS换肤技术的脚本

<SCRIPT LANGUAGE=javascript>    
<!--    
function SetCookie(name,value){    
    var argv=SetCookie.arguments;    
    var argc=SetCookie.arguments.length;    
    var expires=(2<argc)?argv[2]:null;    
    var path=(3<argc)?argv[3]:null;    
    var domain=(4<argc)?argv[4]:null;    
    var secure=(5<argc)?argv[5]:false;    
    document.cookie=name+"="+escape(value)+((expires==null)?"":("; expires="+expires.toGMTString()))+((path==null)?"":("; path="+path))+((domain==null)?"":("; domain="+domain))+((secure==true)?"; secure":"");    
}    

function GetCookie(Name) {    
    var search = Name + "=";    
    var returnvalue = "";    
    if (document.cookie.length > 0) {    
          offset = document.cookie.indexOf(search);    
          if (offset != -1) {          
                offset += search.length;    
                end = document.cookie.indexOf(";", offset);                            
                if (end == -1)    
                      end = document.cookie.length;    
                returnvalue=unescape(document.cookie.substring(offset,end));    
          }    
    }    
    return returnvalue;    
}    

var thisskin;    
thisskin=GetCookie("nowskin");