function scroll(){}

scroll.prototype.upscroll=function(dom,_h,interval){
	var dom=document.getelementbyid(dom);
	var timer=settimeout(function(){
		var _field=dom.firstelementchild;
		_field.style.margintop=_h;
		cleartimeout(timer);
	},1000)
	setinterval(function(){
		var _field=dom.firstelementchild;
		_field.style.margintop="0px";
		dom.appendchild(_field);
		var _field=dom.firstelementchild
		_field.style.margintop=_h;
	},interval)
}

var myscroll=new scroll();