js 获取url参数

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->function getUrlParam(name)
{   
    var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");  
    //alert(reg); 
    var r = window.location.search.substr(1).match(reg);   
    if(r!=null) return unescape(r[2]);
    return   null;   
}