function scrolling(objId,sec1,sec2,speed,height){
	this.objId=objId;
	this.sec1=sec1;
	this.sec2=sec2;
	this.speed=speed;
	this.height=height;
	this.h=0;
	this.div=document.getElementById(this.objId);


	this.htmltxt=this.div.innerHTML;
//	this.div.innerHTML=this.htmltxt+this.htmltxt;
	this.div.isover=false;
	this.div.onmouseover=function(){
		this.isover=true;
	}
	this.div.onmouseout=function(){
		this.isover=false;
	}
	var self=this;
	this.div.scrollTop=0;
	window.setTimeout(function(){self.play()},this.sec1);
}

scrolling.prototype={
	play:function(){
		var self=this;
		if(!this.div.isover){
			this.div.scrollTop+=this.speed;
			if(this.div.scrollTop>this.div.scrollHeight/2){
				this.div.scrollTop=0;
			}
			else{
				this.h+=this.speed;
				if(this.h>=this.height){
					if(this.h>this.height|| this.div.scrollTop%this.height !=0){
						this.div.scrollTop-=this.h%this.height;
					}
					this.h=0;
					window.setTimeout(function(){self.play()},this.sec1);
					return;
				}
			}
		}
		window.setTimeout(function(){self.play()},this.sec2);
	}
	,
	prev:function(){
		if(this.div.scrollTop == 0)
			this.div.scrollTop = this.div.scrollHeight/2;
		this.div.scrollTop -= this.height;
	}
	,
	next:function(){
		if(this.div.scrollTop ==  this.div.scrollHeight/2)
			this.div.scrollTop =0;
		this.div.scrollTop += this.height;
	}
}
;