function isValidURL(urlfield)
{

  var oRegExp = /[^:]+:\/\/[^:\/]+(:[0-9]+)?\/?.*/;
 if(urlfield.name=='submit_link' || urlfield.name=='edit_link_url')
 {
	if(urlfield.value=="") return true;
	else if(!oRegExp.test(urlfield.value))
	{
	        alert('\n\n The URL you have entered is invalid.\n Please check it for accuracy.\n Thank you.');
	        urlfield.focus();
	        urlfield.select();
	        return false;
	    }
  }
 else if(urlfield.name!='submit_link' || urlfield.name!='edit_link_url')
 {
  if(!oRegExp.test(urlfield.value))
    {
        alert('\n\n The URL you have entered is invalid.\n Please check it for accuracy.\n Thank you.');
        urlfield.focus();
        urlfield.select();
        return false;
    }
}

}
function CheckAll()
             {
                for (var i=0;i<document.Formsel.elements.length;i++)
                {
                   var e = document.Formsel.elements[i];
                   if (e.name != "selectall")
                   e.checked = document.Formsel.selectall.checked;
                }
             }

 function confirmdel()
{
	return confirm("Sure Want to Delete?");
}

function validate_owner()
{
flag=false;
var frm=document.owner;
 email1=frm.email1.value;
 siteurl=frm.siteurl1.value;
 rateOf=email1.indexOf('\@');
 dot=email1.indexOf('.');
	 if(allTrim(email1)==''|| dot==-1 || rateOf==-1)
	{
	alert("Please enter your valid contact email Id");
	frm.email1.focus();
	flag=false;
	}
	else if(allTrim(siteurl)=="")
	{
	alert("Please enter your valid contact email Id");
	frm.siteurl1.focus();
	flag=false;
	}
	else flag=true;
return flag;
}
<!--
function validate_user()
{
var frm=document.useradd;
flag=false;
 email1=frm.email.value;
 rateOf=email1.indexOf('\@');
 dot=email1.indexOf('.');
 payment_email1=frm.payment_email.value;
 sub_rateOf=payment_email1.indexOf('\@');
 sub_dot=payment_email1.indexOf('.');
	if(allTrim(frm.username.value)=='')
	{
		alert("User name should not be empty");
		frm.username.focus();
		flag=false;
	}
        else if(allTrim(frm.password.value)=='')
        {
                alert("Password should not be empty");
                frm.password.focus();
                flag=false;
        }
	else if(frm.password.value != frm.con_password.value)
	{
		alert("Verify your confirm password. Password both are not unique");
		frm.con_password.value="";
		frm.con_password.focus();
		flag=false;
	}
	else if(allTrim(frm.name.value)=='')
	{
		alert("Name is empty");
		frm.name.focus();
		flag=false;
	}
	else if(allTrim(email1)==''|| dot==-1 || rateOf==-1)
	{
        	alert("Please enter your valid contact email Id");
		frm.email.focus();
        	flag=false;
	}
        else if(allTrim(payment_email1)==''|| sub_dot==-1 || sub_rateOf==-1)
        {
                alert("Please enter your valid Payment email Id");
		frm.payment_email.focus();
                flag=false;
        }


	else
		flag=true;

return flag;
}
function validate_edituser()
{
var frm=document.useradd;
flag=false;
 email1=frm.email.value;
 rateOf=email1.indexOf('\@');
 dot=email1.indexOf('.');
 sub_email1=frm.sub_email.value;
 sub_rateOf=sub_email1.indexOf('\@');
 sub_dot=sub_email1.indexOf('.');
	if(allTrim(frm.name.value)=='')
	{
		alert("Name is empty");
		frm.name.focus();
		flag=false;
	}
	else if(allTrim(email1)==''|| dot==-1 || rateOf==-1)
	{
        	alert("Please enter your valid contact email Id");
		frm.email.focus();
        	flag=false;
	}
        else if(allTrim(sub_email1)==''|| sub_dot==-1 || sub_rateOf==-1)
        {
                alert("Please enter your valid subscriber's email Id");
		frm.sub_email.focus();
                flag=false;
        }
	else if(email1==sub_email1)
	{
		alert("Contact Email and Subscriber Email should not be same. Type different.");
		frm.sub_email.focus();
		flag=false;

	}
	else if(allTrim(frm.username.value)=='')
	{
		alert("User name should not be empty");
		frm.username.focus();
		flag=false;
	}
        else if(allTrim(frm.password.value)=='')
        {
                alert("Password should not be empty");
                frm.password.focus();
                flag=false;
        }


	else
		flag=true;

return flag;
}


function validate_login()
{
flag=false;
frm=document.login;
	if(allTrim(frm.username.value)=='')
	{
		flag=false;
		alert("User name should not be empty");
		frm.username.focus();
	}
	else if(allTrim(frm.password.value)=='')
	{
		flag=false;
		alert("Password should not be empty");
		frm.password.focus();
	}
	else
		flag=true;
return flag;
}
function allTrim(s)
{
    for(i=0;i<s.length;i++)
    {
        if(s.charAt(i)!=' ')
        {
                break;
        }
    }
    s=s.substr(i)
    if(s.length>0)
    {
        for(i=s.length-1,j=0;i>=0;i--,j++)
        {
                if(s.charAt(i)!=' ')
                {
                        break;
                }
        }
        s=s.substr(0,s.length-j)
    }
    return s;
}


//-->