Url validation in javascript

Hi ,

I have implemented the function for Url validation. It works fine, but if I put long URL like
ex: http://test.com/portal/site/menuitem.bc20064d3988cfc006d0c110cd2db1a0/?vgnextoid=9ce3533724772110VgnVCM1000008c321b0aRCRD&vgnextfmt=default?WT.mc_id=mra_081808
Then validation doesn't work.

Here is my Code:
function checkUrl()
    {
        var URL=  document.getElementById('txtURL_Insert');
        if(URL.value.match(/^((ht|f)tp(s?))\:\/\/\w+([\.\-]\w+)*\.\w{2,4}(\:\d+)*([a-zA-Z0-9\+\$#~_\=\:\,\\\/\.\-\?&\%\#\$]\w+)*\/?$/i) )    
            {
                return true;
            }
        else
            {
                alert("Please enter correct url.");
                URL.select();
                URL.focus();
                return false;
            }
 
}//checkUrl

Please let me know where is the problem.Start Free Trial