function wheel(event){
	var delta=0;
	if(!event){
		event=window.event;
	}
	if(event.wheelDelta){
		delta=event.wheelDelta/120;
		if(window.opera){
			delta=-delta;
		}
	}else if (event.detail){
		delta=-event.detail/3;
	}
	if(delta && document.getElementById('TB_window')){
		document.getElementById('TB_ajaxContent').focus();
		var top=document.getElementById('TB_ajaxContent').scrollTop;
		var height=(jQuery.browser.msie && jQuery.browser.version == 8) ? 440 : 465;
		
		if(scrollflag == false || (delta > 0 && top <= 0) || (delta < 0 && top >= height)){
			if(event.preventDefault){
				event.preventDefault();
			}
			event.returnValue = false;
		}
	}
}

if(window.addEventListener){
	window.addEventListener('DOMMouseScroll',wheel,false);
}
window.onmousewheel=document.onmousewheel=wheel;