function validateuser()
{
	if(document.sweep_form.fname.value=='')
	{
		alert("Please enter your first name.");
		document.sweep_form.fname.focus();
		return false;
	}

	if(document.sweep_form.lname.value=='')
	{
		alert("Please enter your last name.");
		document.sweep_form.lname.focus();
		return false;
	}
	/*if(document.sweep_form.address.value=='')
	{
		alert("Please enter your address.");
		document.sweep_form.address.focus();
		return false;
	}

	if(document.sweep_form.city.value=='')
	{
		alert("Please enter your city.");
		document.sweep_form.city.focus();
		return false;
	}
	if(document.sweep_form.zip.value=='' || isNaN(document.sweep_form.zip.value))
	{
		alert("Please enter your zip code.");
		document.sweep_form.zip.focus();
		return false;
	}
	*/
	if(document.sweep_form.email.value=='')
	{
		alert("Please enter your e-mail address.");
		document.sweep_form.email.focus();
		return false;
	}

if (document.sweep_form.email.value != "") {
	 var emailVal  = true;
 	 var Temp     = document.sweep_form.email;
	 var atSign    = Temp.value.indexOf('@');
	 var dot   = Temp.value.lastIndexOf('.');
	 var space    = Temp.value.indexOf(' ');
	 var length   = Temp.value.length - 1;
        if (atSign < 1 | dot <= atSign+1 | dot == length  | space  != -1) {
            emailVal = false;
            alert("Please enter a valid e-mail address.");
            document.sweep_form.email.select();
            return false;
     }
   }


	if(document.sweep_form.remail.value=='')
	{
		alert("Please re-enter your e-mail address.");
		document.sweep_form.remail.focus();
		return false;
	}

	if(document.sweep_form.email.value!=document.sweep_form.remail.value)
	{
		alert("Your e-mail addresses are not matching. Please re-enter your e-mail.");
		document.sweep_form.remail.focus();
		return false;
	}
    
    if(document.sweep_form.chk2.checked)
    {
        if(document.sweep_form.acode.value=='' ||isNaN(document.sweep_form.acode.value) || document.sweep_form.middlefone.value =="" || isNaN(document.sweep_form.middlefone.value) || document.sweep_form.lastfone.value =="" || isNaN(document.sweep_form.lastfone.value))
        {
            alert("Please enter your mobile phone number.");
            document.sweep_form.acode.focus();
            return false;
        }
        
		if(document.sweep_form.acode.value.length < 3) 
        {
            alert("Please enter a valid mobile phone number.");
            document.sweep_form.acode.focus();
            return false;
        }
		if(document.sweep_form.middlefone.value.length < 3) 
        {
            alert("Please enter a valid mobile phone number.");
            document.sweep_form.acode.focus();
            return false;
        }
		if(document.sweep_form.lastfone.value.length < 4) 
        {
            alert("Please enter a valid mobile phone number.");
            document.sweep_form.acode.focus();
            return false;
        }
        /*if(document.sweep_form.carrierlist.value == '0')
        {
            alert("Please select your Cell Phone Carrier.");
            document.sweep_form.carrierlist.focus();
            return false;
        }*/
    }


	return true;
	
}