function ValidateUserInput()
	{
		var zip_pattern = /(^\d{5}$)/;
		var zip_flag = 1;
		
    	if (document.MemberSearch.zipCode.value.length == 0)
        {
            	alert('Please complete the required fields: Missing zip code');
				return false;            
        
        }

		if (document.MemberSearch.zipCode.value.length > 0)		
		{   
		   if(zip_pattern.test(document.MemberSearch.zipCode.value))
		        {
			        zip_flag = 0;
			    }
		    else
		        {
		            alert("Please enter your 5-digit Zip Code");
		            return false;
		        }
		}
		document.getElementById('MemberSearch').submit();
	}