function validate_email(field,alerttxt)
{
with (field)
  {
  apos=value.indexOf("@");
  dotpos=value.lastIndexOf(".");
  if (apos<1||dotpos-apos<2)
    {alert(alerttxt);return false;}
  else {return true;}
  }
}

function PhoneValidate(field)
{
  var ValidChars = "0123456789 ()";
   var IsNumber=true;
   var Char;
   var sText = field.value;
 
    for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   
      if (field.value.length==0) 
         {
         IsNumber = false;
		 }
   
   
    if (field.value.length < 12) {
    IsNumber = false;
   } 
   if (field.value.length > 14) {
    IsNumber = false;
   } 
   if (field.value.length == 13) {
    IsNumber = false;
   } 
   
   if (!IsNumber)
     {alert("The phone number you entered is not valid.\r\nPlease enter a phone number with the format Landline: (02) XXXX XXXX Mobile: XXXX XXX XXX");
      return false;
   }
}

function validate_formA(thisform)
{
with (thisform)
  {
  if (category2.value=="")
    {alert("Please provide name");category2.focus();return false;}
  if (validate_email(category3,"Please provide valid E-mail address")==false)
    {category3.focus();return false;}
  }
}

function validate_formB(thisform)
{
with (thisform)
  {
  if (name.value=="")
    {alert("Please provide name");name.focus();return false;}
  
  if (PhoneValidate(phone)==false)
  {phone.focus();return false;}
  
  if (validate_email(email_address,"Please provide valid E-mail address")==false)
    {email_address.focus();return false;}
  }
}