function validate_form ( )
{


        if ( document.orders_form.TOTAL.value == "" )
        {
                alert ( "Please select some kits!" );
                return false;
        }

        if ( document.orders_form.user_name.value == "" )
        {
                alert ( "Please enter your name!" );
                return false;
        }
        if ( document.orders_form.phone.value == "" )
        {
                alert ( "Please enter your phone number!" );
                return false;
        }
        if ( document.orders_form.email.value == "" )
        {
                alert ( "Your must enter your email address!" );
                return false;
        }
        if ( document.orders_form.address.value == "" )
        {
                alert ( "Your must enter your address!" );
                return false;
        }
        if ( 
				( document.orders_form.delivery[0].checked == false ) 
				&& 
				( document.orders_form.delivery[1].checked == false )
				&& 
				( document.orders_form.delivery[2].checked == false )
				&& 
				( document.orders_form.delivery[3].checked == false )
			)
        {
                alert ( "Please choose your delivery option!" );
                return false;
        }
        if ( 
				( document.orders_form.payment_method[0].checked == false ) 
				&& 
				( document.orders_form.payment_method[1].checked == false )
				&& 
				( document.orders_form.payment_method[2].checked == false )
				&& 
				( document.orders_form.payment_method[3].checked == false )
			)
        {
                alert ( "Please choose your payment method!" );
                return false;
        }

}