// JavaScript Document
 function validation()
 {
 if(document.contact.name.value=="")
{
	alert("enter your Name");
    document.contact.name.focus();
	 return false;
}
 if(document.contact.name.value=="")
{
	alert("enter your Name");
    document.contact.name.focus();
	 return false;
}
if(document.contact.phone.value=="")
{
	alert("enter your phone");
	document.contact.phone.focus();
	return false;
}

 if((document.contact.phone.value).length<10)
{
	alert("enter 10 digit phonenumber eg 9983633333");
	document.contact.phone.focus();
	return false;
}
if(isNaN(document.contact.phone.value))
{
	alert("enter your phonenumber");
	document.contact.phone.focus();
	return false;
}
var i=document.contact.email.value;
l=i.length;
var j=document.contact.email.value.indexOf("@");
var n=document.contact.email.value.lastIndexOf("@");
if((j<3)||(j!=n))
{
window.alert("enter a valid email");
document.contact.email.focus();
return false;
}
var k=document.contact.email.value.indexOf(".");
var y=document.contact.email.value.lastIndexOf(".");
var m=k-j;
if((m<4)||(k!=y))
{
window.alert("please enter a valid email");
document.contact.email.focus();
return false;
}
if(l<k+3)
{
window.alert("please enter a valid email");
document.contact.email.focus();
return false;
}
if((document.contact.checkbox.checked==false)&&(document.contact.checkbox2.checked==false))
{
alert("enter ur contact details")
document.contact.checkbox.focus;
return false;
}
 if(document.contact.textarea.value=="")
{
	alert("enter your comments");
    document.contact.textarea.focus();
	 return false;
}
 }