function isblank(s)
{
	for(var i = 0; i < s.length; i++)
	{
		var c = s.charAt(i);
		if((c != ' ') && (c != '\n') && (c != '\t'))
			return false;
	}
	//window.alert("true");
	return true;
}

function validate_email(email){
if ((email.indexOf("@")==-1) || (email.indexOf(".")==-1) || (email.indexOf(" ")!=-1) || (email.length<6)) 
	return false;
else
	return true;
}

function validateForm(form)
{
	
	var email = form.email;
	
		
	
	if(isblank(email.value) || !(validate_email(email.value)))
	{
		window.alert("Please enter valid email address.");
		email.focus();
		return false;
	}


	
	return true;
}