function validation(form1)

{

	if(form1.txtname.value=='')

	{

	alert("Please enter Your Name");

	return false;

	}

	if(form1.txtcompany.value=='')

	{

	alert("Please enter Your Company Name");

	return false;

	}

	if (form1.txtemail.value == "")

  {

    alert ("Please enter  E-Mail address");

	return false;

  }

	if ((form1.txtemail.value.indexOf ('@') == -1 ||   form1.email.value.indexOf ('.') == -1) &&   form1.txtemail.value != "")

  {

    alert (" Please enter Valid E-Mail address");

	return false;

  } 

	if(form1.txtph.value=='')

	{

	alert("Please Enter Your Phone number");

	return false;

	}

if(form1.txtcomments.value=='')

	{

	alert("Please fill up your Comments");

	return false;

	}
}