[arcmag]

Все гоcпода, все таки смог разобраться
Просто не знал про событие onmousewheel

var wrapper, block, point2 = false;
window.onload = function(){
	wrapper = document.getElementsByClassName("wrapper").item(0);
	block = document.getElementsByClassName("block").item(0);
	wrapper.onmouseover = function(){point2=true;test_out();}
	wrapper.onmouseout = function(){point2=false;test_out();}
	wrapper.onmousewheel = mouseScrollBlock;
}
function mouseScrollBlock(e){
	if(point2){
		scrollTop+=-e.deltaY;
		if(scrollTop>0) scrollTop = 0;
		if(scrollTop<-(block.offsetHeight-wrapper.offsetHeight))
		scrollTop = -(block.offsetHeight-wrapper.offsetHeight);
		block.style.marginTop = scrollTop+"px";
		test_out();
	}
}