function ScrollText(content,btnPrevious,btnNext,autoStart)
{this.Delay=10;this.LineHeight=20;this.Amount=1;this.Direction="up";this.Timeout=1500;this.ScrollContent=this.$(content);this.ScrollContent.innerHTML+=this.ScrollContent.innerHTML;if(btnNext)
{this.NextButton=this.$(btnNext);this.NextButton.onclick=this.GetFunction(this,"Next");this.NextButton.onmouseover=this.GetFunction(this,"Stop");this.NextButton.onmouseout=this.GetFunction(this,"Start");}
if(btnPrevious)
{this.PreviousButton=this.$(btnPrevious);this.PreviousButton.onclick=this.GetFunction(this,"Previous");this.PreviousButton.onmouseover=this.GetFunction(this,"Stop");this.PreviousButton.onmouseout=this.GetFunction(this,"Start");}
this.ScrollContent.onmouseover=this.GetFunction(this,"Stop");this.ScrollContent.onmouseout=this.GetFunction(this,"Start");if(autoStart)
{this.Start();}}
ScrollText.prototype.$=function(element)
{return document.getElementById(element);}
ScrollText.prototype.Previous=function()
{clearTimeout(this.AutoScrollTimer);clearTimeout(this.ScrollTimer);this.Scroll("up");}
ScrollText.prototype.Next=function()
{clearTimeout(this.AutoScrollTimer);clearTimeout(this.ScrollTimer);this.Scroll("down");}
ScrollText.prototype.Start=function()
{clearTimeout(this.AutoScrollTimer);this.AutoScrollTimer=setTimeout(this.GetFunction(this,"AutoScroll"),this.Timeout);}
ScrollText.prototype.Stop=function()
{clearTimeout(this.ScrollTimer);clearTimeout(this.AutoScrollTimer);}
ScrollText.prototype.AutoScroll=function()
{if(this.Direction=="up")
{if(parseInt(this.ScrollContent.scrollTop)>=parseInt(this.ScrollContent.scrollHeight)/2)
{this.ScrollContent.scrollTop=0;}
this.ScrollContent.scrollTop+=this.Amount;}
else
{if(parseInt(this.ScrollContent.scrollTop)<=0)
{this.ScrollContent.scrollTop=parseInt(this.ScrollContent.scrollHeight)/2;}
this.ScrollContent.scrollTop-=this.Amount;}
if(parseInt(this.ScrollContent.scrollTop)%this.LineHeight!=0)
{this.ScrollTimer=setTimeout(this.GetFunction(this,"AutoScroll"),this.Delay);}
else
{this.AutoScrollTimer=setTimeout(this.GetFunction(this,"AutoScroll"),this.Timeout);}}
ScrollText.prototype.Scroll=function(direction)
{if(direction=="up")
{if(this.ScrollContent.scrollTop==0)
{this.ScrollContent.scrollTop=parseInt(this.ScrollContent.scrollHeight)/2;}
this.ScrollContent.scrollTop-=this.Amount;}
else
{this.ScrollContent.scrollTop+=this.Amount;}
if(parseInt(this.ScrollContent.scrollTop)>=parseInt(this.ScrollContent.scrollHeight)/2)
{this.ScrollContent.scrollTop=0;}
if(parseInt(this.ScrollContent.scrollTop)%this.LineHeight!=0)
{this.ScrollTimer=setTimeout(this.GetFunction(this,"Scroll",direction),this.Delay);}}
ScrollText.prototype.GetFunction=function(variable,method,param)
{return function()
{variable[method](param);}}