String.prototype.Trim = function() {  
    var m = this.match(/^\s*(\S+(\s+\S+)*)\s*/);  
    return (m == null) ? "" : m[1];  
    } 


    function getRadioValue(name){   //获取单选按钮的选中值//
    var radioes = document.getElementsByName(name);
    for(var i=0;i<radioes.length;i++)
    {
         if(radioes[i].checked){
          return radioes[i].value;
         }
    }
    return false;
    }

	function Keysearch()
    {
        var keyword = document.getElementById("skeywords").value.Trim();
        var radiotype=getRadioValue("Radiotype");     
        if (keyword=="")
        {
            alert('请输入搜索关键字');
        }
        else
        {
            if (radiotype=="1")
                location.href="/Article.aspx?keyword=" + keyword + "";
            else
                location.href="/PhotoSearch.aspx?keyword=" + keyword+ "";
        }
    }