function cart_product_add( div_id , p_id , type ) {

	new Ajax.Updater({ success: div_id }, 'do.php' , {
		parameters: { a: 'ajax_visitor_cart_add' , type: type , product_id: p_id },
		method: 'get'
	});	
	
}

function cart_product_subtract( div_id , p_id , type ) {
	
	new Ajax.Updater({ success: div_id }, 'do.php' , {
		parameters: { a: 'ajax_visitor_cart_subtract' , type: type , product_id: p_id },
		method: 'get'
	});	
	
}

function cart_product_delete( div_id , p_id , type ) {
	
	new Ajax.Updater({ success: div_id }, 'do.php' , {
		parameters: { a: 'ajax_visitor_cart_delete' , type: type , product_id: p_id },
		method: 'get'
	});	
	
}

function update_cart( div_id , type ) {

	new Ajax.Updater({ success: div_id }, 'do.php' , {
		parameters: { a: 'ajax_visitor_cart' , type: type },
		method: 'get'
	});

}