//Check if certain values exist
  function validate_form( )
  { 
	var name = document.getElementById( 'contactname' );
    var phone = document.getElementById( 'contactphone' );
    var email = document.getElementById( 'contactemail' );
    var description = document.getElementById( 'contactcase' );

    if( name.value == '' )
    {
      alert( 'Please enter your name.' );
      return false;
    } 
    else if(/[^a-z\s'-\.]/gi.test(name.value) || name.value.match(/[)(]/)) 
	{
	  alert( 'Only alpha characters, spaces, apostrophe, hyphen, and periods are valid in this field.' );
      return false;	  
	}
    else if( email.value == '' )
    {
      alert( 'Please enter your email.' );
      return false;
    }
   if (!email.value.match(/^[\w\d!#$%&'*+-\/=?^`{|}~]+(\.[\w\d!#$%&'*+-\/=?^`{|}~]+)*@([a-z\d][-a-z\d]*[a-z\d]\.)*[a-z][-a-z\d]*[a-z]$/)) {
            alert("The email you entered is not valid.\r\nPlease enter an email with the format name@domain.com.")
          return false;
        }
    else if( phone.value == '' )
    {
      alert( 'Please enter your phone number.' );
      return false;
    }
   else if(phone.value.search(/\d{3}\)\s*\d{3}\-\d{4}/)==-1)
   {
      alert("The phone number you entered is not valid.\r\nPlease enter a phone number with the format xxx-xxx-xxxx.");
      return false;
   }
    else if( description.value == '' )
    {
      alert( 'Please enter a description.' );
      return false;
    }
    else
    {
      return true;
    } 
  }