function addEvent(name,obj,f) {
  if(obj) {
    if (obj.attachEvent) {
      obj.attachEvent("on"+name,f);
    } else if (obj.addEventListener) {
      obj.addEventListener(name,f,false);
    }
  }
}

addEvent('load',window,function() {
	var calbg=document.getElementById('calbg');
	var h=calbg.parentNode.offsetHeight;
	calbg.style.height=(h-171-108)+'px';
	window.print();
});