function buy(book) {

var w = parseInt(screen.availWidth - 10); 
var h = parseInt(screen.availHeight * .96);  

var x = "https://bri10h.webmetrix.net.au/secure_cn23014/orderbook.asp?" + book;
window.open(x, "", "statusbar=no, toolbars=no, scrollbars, width=" + w + ", height=" + h + ", left=0, top=0");
window.close();

}