function validate() 
{
	if (document.contactus.name.value.length==0)
	{
		alert("please enter your name");
		document.contactus.name.focus();
		return false;
	}

	if (document.contactus.email.value.length==0)
	{
		alert("please enter your email address");
		document.contactus.email.focus();
		return false;
	}

	if(!validateEmail(document.contactus.email.value)) 
    { 
    	alert("please enter your valid email address"); 
		document.contactus.email.focus();
        return false; 
    }

	if (document.contactus.subject.value.length==0)
	{
		alert("please enter the subject of message");
		document.contactus.aboutarea.focus();
		return false;
	}
	
	if (document.contactus.message.value.length==0)
	{
		alert("please enter the message");
		document.contactus.message.focus();
		return false;
	}
	return true;
}