var prices = {
	
	width : 500,
	
	check_form : function () {

		//get basket totals
		var basket_totals = 0;
		var select_boxes = $('bf').getElementsByTagName('select');
		for( var i=0; i < select_boxes.length; i++ ) basket_totals+= parseInt( select_boxes[i].value, 10 );	

		if( basket_totals > 0 ) return true;
		
		popup_tools.open( '<h1 style="background-image: url(images/headings/sorry.png); width: 285px;"><span>Sorry, there was an error</span></h1>You haven\'t chosen any items to add to your basket.', prices.width );
		
		return false;

	}

}