/*滚动内容推荐*/
function ScrollText(content,btnPrevious,btnNext,autoStart,timeout,isSmoothScroll) {
	this.Speed=10;
	this.Timeout=timeout;
	this.stopscroll=false;
	this.isSmoothScroll=isSmoothScroll;
	this.LineHeight=20;
	this.NextButton=this.$(btnNext);
	this.PreviousButton=this.$(btnPrevious);
	this.ScrollContent=this.$(content);
	this.ScrollContent.innerHTML+=this.ScrollContent.innerHTML;
	if(this.PreviousButton) {
		this.PreviousButton.onclick=this.GetFunction(this,"Previous");
		this.PreviousButton.onmouseover=this.GetFunction(this,"MouseOver");
		this.PreviousButton.onmouseout=this.GetFunction(this,"MouseOut");
	}
	if(this.NextButton) {
		this.NextButton.onclick=this.GetFunction(this,"Next");
		this.NextButton.onmouseover=this.GetFunction(this,"MouseOver");
		this.NextButton.onmouseout=this.GetFunction(this,"MouseOut");
	}
	this.ScrollContent.onmouseover=this.GetFunction(this,"MouseOver");
	this.ScrollContent.onmouseout=this.GetFunction(this,"MouseOut");
	if(autoStart) {
		this.Start();
	}
}
ScrollText.prototype={
	$: function (element) {
		return document.getElementById(element);
	},
	Previous: function () {
		this.stopscroll=true;
		this.Scroll("up");
	},
	Next: function () {
		this.stopscroll=true;
		this.Scroll("down");
	},
	Start: function () {
		if(this.isSmoothScroll) {
			this.AutoScrollTimer=setInterval(this.GetFunction(this,"SmoothScroll"),this.Timeout);
		} else {
			this.AutoScrollTimer=setInterval(this.GetFunction(this,"AutoScroll"),this.Timeout);
		}
	},
	Stop: function () {
		clearTimeout(this.AutoScrollTimer);
		this.DelayTimerStop=0;
	},
	MouseOver: function () {
		this.stopscroll=true;
	},
	MouseOut: function () {
		this.stopscroll=false;
	},
	AutoScroll: function () {
		if(this.stopscroll) {
			return;
		}
		this.ScrollContent.scrollTop++;
		if(parseInt(this.ScrollContent.scrollTop)%this.LineHeight!=0) {
			this.ScrollTimer=setTimeout(this.GetFunction(this,"AutoScroll"),this.Speed);
		} else {
			if(parseInt(this.ScrollContent.scrollTop)>=parseInt(this.ScrollContent.scrollHeight)/2) {
				this.ScrollContent.scrollTop=0;
			}
			clearTimeout(this.ScrollTimer);
		}
	},
	SmoothScroll: function () {
		if(this.stopscroll) {
			return;
		}
		this.ScrollContent.scrollTop++;
		if(parseInt(this.ScrollContent.scrollTop)>=parseInt(this.ScrollContent.scrollHeight)/2) {
			this.ScrollContent.scrollTop=0;
		}
	},
	Scroll: function (direction) {
		if(direction=="up") {
					this.ScrollContent.scrollTop--;
				} else {
					this.ScrollContent.scrollTop++;
				}
				if(parseInt(this.ScrollContent.scrollTop)>=parseInt(this.ScrollContent.scrollHeight)/2) {
					this.ScrollContent.scrollTop=0;
				} else if(parseInt(this.ScrollContent.scrollTop)<=0) {
					this.ScrollContent.scrollTop=parseInt(this.ScrollContent.scrollHeight)/2;
				}
 
				if(parseInt(this.ScrollContent.scrollTop)%this.LineHeight!=0) {
					this.ScrollTimer=setTimeout(this.GetFunction(this,"Scroll",direction),this.Speed);
		}
	},
	GetFunction: function (variable,method,param) {
		return function () {
			variable[method](param);
		}
	}
}