function validateForm()
{
var Name=document.forms["enquiry"]["Name"].value;
var Phne=document.forms["enquiry"]["Phone"].value;
var Company=document.forms["enquiry"]["Company"].value;
var Zigzag=document.forms["enquiry"]["valid"].value;
var EmailAdd=document.forms["enquiry"]["Email"].value;
var EmailVal=document.forms["enquiry"]["Email"].value;
var atpos=EmailVal.indexOf("@");
var dotpos=EmailVal.lastIndexOf(".");

if (Name==null || Name=="")
  {
  alert("Name must be filled out");
  return false;
  }
if (Zigzag==null || Zigzag=="")
  {
  alert("Security box must be filled out");
  return false;
  }
if (Zigzag!="ZIGZAG")
  {
  alert("Security code is incorrect");
  return false;
  }
else if (Phne==null || Phne=="")
  {
  alert("Phone Number must be filled out");
  return false;
  }
else if (Company==null || Company=="")
  {
  alert("Company must be filled out");
  return false;
  }
else if (EmailAdd==null || EmailAdd=="")
  {
  alert("Email must be filled out");
  return false;
  }
else if (atpos<1 || dotpos<atpos+2 || dotpos+2>=EmailVal.length)
  {
  alert("E-mail address not valid");
  return false;
  }
 return true;
}