静态页面URL参数

<script>

//获得参数的方法
var request =
{
 QueryString : function(val)
 {
  var uri = window.location.search;
  var re = new RegExp("" +val+ "=([^&?]*)", "ig");
  return ((uri.match(re))?(uri.match(re)[0].substr(val.length+1)):null);
 }
}

function getPra(parameter){
 var reg,url,url2,iLen,iStart,iEnd;
 url = document.location.href;
 reg = new RegExp(parameter);
 if(url.search(reg) == -1){
  return "";
 }
 else{
  iLen = parameter.length;
  iStart = url.search(reg) + iLen +1;
  url2 = url.substr(iStart);
  iEnd = iStart + url2.search(/&/i);  
  if((iStart - 1) == iEnd){
   return url.substr(iStart);
  }
  else{
   return url.substr(iStart,iEnd - iStart);
  }
 }
}
</script>

后一个有点问题