function openbook(pageNum) {
   	var objFrame = window.frames['myiframe'];
   	if (! objFrame) {
           pageLocation = "image/gallery/wedding-" + pageNum + ".html";
   		window.open(pageLocation,"page","width=400,height=400,left=305,top=230")
   	} else {
   		objFrame.window.location.href="image/gallery/wedding-" + pageNum + ".html";
   	}
   }
function change(id, newClass) {
	identity=document.getElementById(id);
	identity.className=newClass;
}