function validate_form()
{

    if ( document.home.mst_name.value == "" )
    {
        alert ( "Please fill in the Your Name box." );
        document.home.mst_name.focus();
        return false;
    }

   var reg = /^([A-Za-z0-9_­.])+@([A-Za-z0-9_­.])+.([A-Za-z]{2,4})$/;
   var address = document.home.mst_email.value;
   if ( document.home.mst_email.value == "" )
    {
        alert ( "Please fill in the Your E-Mail box." );
        document.home.mst_email.focus();
        return false;
    }
   if(reg.test(address) == false) {
      alert('Invalid Email Address');
	  document.home.mst_email.focus();
      return false;
   }

   var pno = /^[0-9]*$/;
   var phno = document.home.mst_phone.value;
     if ( document.home.mst_phone.value == "" )
    {
        alert ( "Please fill in the Your Phone Number box." );
        document.home.mst_phone.focus();
        return false;
    }
   if(pno.test(phno) == false)
	   {
      alert('Phone Number Contains Numbers Only');
	  document.home.mst_phone.focus();
	 return false;
	  } 
    return true;

}