function empty(field)
{
	if((field=="")||(field==null))
	{
		return false;
	}
	else
	{
		return true;
	}

}
function email(field)
{
	var filter=/^[a-zA-Z][a-zA-Z0-9]*(\.?\w)*@[a-zA-Z][a-zA-Z0-9]*\.[a-zA-Z][a-zA-Z0-9]*(\.?\w)*$/;
	if(!filter.test(field))
	{
		return false;
	}
	else
	{
		return true;
	}
}
function validate(feedback)
{
	var e1=empty(feedback.name.value);
	var e2=email(feedback.email.value);
	if((e1==false)||(e2==false))
	{
		if(e1==false)
		{
			alert("Name Cannot Be Empty");
			feedback.name.focus();
		}
		if(e2==false)
		{
			alert("Invalid Email Address");
			feedback.email.focus();
		}
		return false;
	}
}