function checkform()
{
  var my_car=document.form1.name.value;
  var fn = my_car.replace(/^\s+|\s+$/, '');
  if(fn=='')
  {
	alert('Please Enter Name !');
	document.form1.name.focus();
	return false;
  }	
 if(document.form1.email.value=="")
			{
				alert("Please Enter Email Id !");
				document.form1.email.focus();
				return false;
			}
			if(!is_email(document.form1.email.value))
			{
				alert('Please Enter the Correct email Id!');
				document.form1.email.value=="";
				document.form1.email.focus();
				return false;
			}
 
  var my_car=document.form1.phone.value;
  var fn = my_car.replace(/^\s+|\s+$/, '');
  if(fn=='')
  {
	alert('Please Enter Phone Number !');
	document.form1.phone.focus();
	return false;
  }	
  if(isNaN(document.form1.phone.value))
	{
	   alert("Please Enter Valid  Phone Number !");
	   document.form1.phone.focus();
	   return false;
	}
  var my_car=document.form1.comment.value;
  var fn = my_car.replace(/^\s+|\s+$/, '');
  if(fn=='')
  {
	alert('Please Enter Comments !');
	document.form1.comment.focus();
	return false;
  }
  var my_car=document.form1.code.value;
  var fn = my_car.replace(/^\s+|\s+$/, '');
  if(fn=='')
  {
	alert('Please Enter Verification Code !');
	document.form1.code.focus();
	return false;
  }
  return true;

}
function is_email(email)
	{
		if(!email.match(/^[A-Za-z0-9\._\-+]+@[A-Za-z0-9_\-+]+(\.[A-Za-z0-9_\-+]+)+$/))
		return false;
		return true;
	}
// End of is_email Function

//  this function checks the given number is signed/unsigned number
//  and return true or false accordingly.
	function is_number(number)
	{
		if(!number.match(/^[\-\+0-9e1-9]+$/))
			return false;
		return true;
	}