function trim(inputString) {
	return inputString.replace(/^ +/,"").replace(/ +$/,"");
}

function companysearch()
{
    var r = document.getElementsByName("radiosearchbutton");
    for(var i =0; i < r.length; i ++)
    {
        if(r[i].checked)
        {
            var skey = document.getElementById("txtcompanysearch").value;
            if(trim(skey)==""||"请输入"==skey.substring(0,3))
            {
                alert("请输入您要查找的信息关键字");
                return false;
            }
            else
            {
                window.open(r[i].value + encodeURI(skey));
                return false;
            }    
            break;
        }
    }
}