function validation()
{
	
var fullname=document.form.yourName.value;
if(fullname=='')
{
	alert("Enter your full name");
	document.form.yourName.focus();
	return false;
}
var telephone=document.form.telNo.value;
if(telephone=='')
{
	alert("Enter Telephone Number");
	document.form.telNo.focus();
	return false;
}

var adr = document.form.emailAddress.value.split("@");
if (document.form.emailAddress.value=="")
{
	alert("Please enter email address!");
        document.form.emailAddress.focus();
        return false;
}  

else if (document.form.emailAddress.value.indexOf("@")==-1){

 alert("No @ in the e-mail address!");
 document.form.emailAddress.focus();
   return false;
}

else if (adr[1].indexOf(".")==-1){
 alert("No dot in the e-mail address!");
 return false;
}

return true; 
}