// JavaScript Document
function validate_required(field,alerttxt)
{
with (field)
  {
  if (value==null||value=="")
    {
    alert(alerttxt);return false;
    }
  else
    {
    return true;
    }
  }
}


function validate_form(thisform)
{
with (thisform)
  {  
  if (validate_required(cname,"Please insert your name.")==false)
  {cname.focus();return false;}
  else if (validate_required(ctelephone,"Please insert your telephone number.")==false)
  {ctelephone.focus();return false;}
  else if (validate_required(cemail,"Please insert your email address.")==false)
  {cemail.focus();return false;}
  else if (validate_required(csubject,"Please insert a subject.")==false)
  {csubject.focus();return false;}
  else if (validate_required(cmessage,"Please insert a message.")==false)
  {cmessage.focus();return false;}
  }
}