function validateform(thisform)
{
	valid=true;
	var numericExpression = /^[0-9]+$/;
   	if(document.getElementById("name").value=='')	
    {
	alert("Please enter Name");
	return false;
    } 
   if(document.getElementById("phone").value=='')	
  {
	alert("Please enter Phone Number");
	return false;
  }
   if(document.getElementById("phone").value=='')	
  {
	alert("Please enter Phone Number");
	return false;
  }
with (thisform)
  {
	   if (validate_phone(phone,"Not a valid Phone Number")==false)
     {phone.focus();return false;}
  }
 
with (thisform)
  {
  if (validate_email(email,"Not a valid e-mail address!")==false)
    {email.focus();return false;}
  }
	
  return true;
}

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 validate_phone(fld,alerttxt) {
	with (fld)
{
      var numericExpression = /^[0-9]+$/;
	    if (value.match(numericExpression)) 
		 
       {return true;}
     else {alert(alerttxt);return false;}
}
}