function chkrequest()
{
	var error = false;
	var errorcode = '';
	if ( ($('input[name="txt_name"]').val() == '') || ($('input[name="txt_name"]').val() == 'Name') )
	{
		errorcode += 'Name required\n\r';
		error = true;
	}
	//if ( ($('input[name="txt_phone"]').val() == '') || ($('input[name="txt_phone"]').val() == 'Phone Number') )
//	{
//		errorcode += 'Phone number required\n\r';
//		error = true;
//	}
//	if ( validatephone($('input[name="txt_phone"]').val()) == false )
//	{
//		errorcode += 'Invalid phone number.\n\r';
//		error = true;
//	}
	
	if ( ($('input[name="txt_email"]').val() == '') || ($('input[name="txt_email"]').val() == 'E-mail') )
	{
		errorcode += 'Email address required\n\r';
		error = true;
	}
	
	if ( validateEmail($('input[name="txt_email"]').val()) == false ) 
	{
		errorcode += 'Please enter valid Email address\n\r';
		error = true;
	}
	//if ( ($('input[name="txt_question"]').val() == '') || ($('input[name="txt_question"]').val() == 'Question') )
//	{
//		errorcode += 'Question required\n\r';
//		error = true;
//	}

	if(error)
	{
		alert(errorcode);
	}
	else
	{	
		$('form[name="form_request"]').submit();
	}
}
function validateEmail(elementValue){
   var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
   return emailPattern.test(elementValue);
 }
 
 function validatephone(elementValue)
 {
	//var value = elementValue.val().replace(/^\s\s*/, '').replace(/\s\s*$/, '');
	var intRegex = /^\d+$/;
	return intRegex.test(elementValue);
 }