function validateRadio(field, error)
{
   myOption = -1;
   
   for (i = field.length-1; i > -1; i--)
   {
      if (field[i].checked) 
	  {
         myOption = i; 
	     i = -1;
      }
   }
   
   if (myOption == -1)
   {
      alert(error);
      return false;
   }
   else
   {
      return true;
   }
}

function validateText(field, error)
{
   if(field.value != "" && field.value != null)
   {
      return true;
   }
   else
   {
      alert(error);
      return false;
   }
}

function validatePhone(field, error) 
{
   // Check for correct phone number
   rePhoneNumber = new RegExp(/^\([1-9]\d{2}\)\s?\d{3}\-\d{4}$/);
 
   if (!rePhoneNumber.test(field.value))
   {
      alert(error);
      return false;
   }
 
   return true;
}