function validation()

{

   if(document.feedback_form.name.value=="")
   {

	alert("Please enter Your Name");
	document.feedback_form.name.focus();
	document.feedback_form.name.select();
	return false;
   }
   
   
   if(document.feedback_form.phone.value=="")
   {

	alert("Please enter Telephone no");
	document.feedback_form.phone.focus();
	document.feedback_form.phone.select();
	return false;
   } 
    
      if(document.feedback_form.address.value=="")
   {

	alert("Please enter Address");
	document.feedback_form.address.focus();
	document.feedback_form.address.select();
	return false;
   }


 
   
     
   if(document.feedback_form.email.value=="")
   {
alert("Enter your E-mail Address");
document.feedback_form.email.focus();
return false;
}
if (!isValidEmailStrict(document.feedback_form.email.value))
  {
    alert("Please enter appropriate  value for the \"Email\" field.");
    document.feedback_form.email.focus();
    return (false);
  }
   
   if(document.feedback_form.massage.value=="")
   {

	alert("Please enter Massage");
	document.feedback_form.massage.focus();
	document.feedback_form.massage.select();
	return false;
   }
        
return true;
}

function isValidEmail(address) 
{
	if (address.indexOf('@')<3) return false;
	var name = address.substring(0, address.indexOf('@'));
	var domain = address.substring(address.indexOf('@') + 1);
	if (name.indexOf('(') != -1 || name.indexOf(')') != -1 || name.indexOf('<') != -1 || name.indexOf('>') != -1 || name.indexOf(',') != -1 || name.indexOf(';') != -1 || name.indexOf(':') != -1 || name.indexOf('\\') != -1 || name.indexOf('"') != -1 || name.indexOf('[') != -1 || name.indexOf(']') != -1 || name.indexOf(' ') != -1) return false;
	if (domain.indexOf('(') != -1 || domain.indexOf(')') != -1 || domain.indexOf('<') != -1 || domain.indexOf('>') != -1 || domain.indexOf(',') != -1 || domain.indexOf(';') != -1 || domain.indexOf(':') != -1 || domain.indexOf('\\') != -1 || domain.indexOf('"') != -1 || domain.indexOf('[') != -1 || domain.indexOf(']') != -1 || domain.indexOf(' ') != -1) return false;
	return true;
}



function isValidEmailStrict(address) {
	if (isValidEmail(address) == false) return false;
	var domain = address.substring(address.indexOf('@') + 1);
	if (domain.indexOf('.') == -1) return false;
	if (domain.indexOf('.') == 0 || domain.indexOf('.') == domain.length - 1) return false;
	return true;
}

function changepickdrop(str)
{
if(str=='Yes')
{
document.getElementById("pickdrop").style.display='';
}
else
{
document.getElementById("pickdrop").style.display='none';
}

}