function displayWindow(url, width, height) {
 window.open(url,"displayWindow",'width=' + width + ',height=' + height + ',resizable=0,scrollbars=no,menubar=no,toolbar=no,directories=no,location=no' );
}


function changePrice(ids,object,price) {
    //alert(object.checked);
    for(var i=0; i<ids.length; i++) {
	if (object.checked == true) {
	     //alert(ids[i]);
	     $('price' + ids[i]).innerHTML = parseFloat($('price' + ids[i]).innerHTML) + price
	} else {
	    $('price' + ids[i]).innerHTML = parseFloat($('price' + ids[i]).innerHTML) - price
	}
    }
}