function hooyesQueryString(queryStringName){
var returnValue="";
var URLString=new String(document.location);

URLString=URLString.toLowerCase();//转换为小写
var serachLocation=-1;
var queryStringLength=queryStringName.length;
do { serachLocation=URLString.indexOf(queryStringName+"/=");
if (serachLocation!=-1) {
if ((URLString.charAt(serachLocation-1)=='?') || (URLString.charAt(serachLocation-1)=='&')) {
    URLString=URLString.substr(serachLocation);
    break;
} URLString=URLString.substr(serachLocation+queryStringLength+1);
} 
} while (serachLocation!=-1) if (serachLocation!=-1) {
var seperatorLocation=URLString.indexOf("&");
if (seperatorLocation==-1) {
   returnValue=URLString.substr(queryStringLength+1);
} else {
   returnValue=URLString.substring(queryStringLength+1,seperatorLocation);
} 
  }
return returnValue;
}