function showUploading()
{
document.getElementById('uploading').style.display="block";
document.getElementById('titlediv').style.display="none";
document.getElementById('frm').style.display="none";
}
    function isUrl(s) {
    var regexp = /(http):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
	return regexp.test(s);
    }

    function isJpg(s) {
    var regexp = /.*(jpg|JPG|jpeg|JPEG|GIF|gif|PNG|png).*/
    return regexp.test(s);
    }
	
function verifyThis(obj)
{
if(isJpg(obj.fileupload.value))
{
showUploading();
return true;
}
else
{
alert("Only image files (jpeg, gif, png) are allowed!");
return false;
}
}
function verify_URL_form(obj)
{
if(isUrl(obj.value))
{
showUploading();
return true;
}
else
{
alert("Incorrect URL!");
return false;
}

}