function makeScrollBar(content,horizontal,ignoreMouse){if(!$type(content)){return true;}
var content=$(content);var steps=(horizontal?(content.getScrollSize().x-content.getSize().x):(content.getSize().scrollSize.y-content.getSize().size.y));var scrollbar=new Element('div',{'class':'scrollbar-vert'});scrollbar.setStyle('height',content.getSize().size.y);var handle=new Element('div',{'class':'handle-vert'});scrollbar.adopt(handle);content.getParent().adopt(scrollbar);content.setStyles({overflow:'hidden'});var slider=new Slider(scrollbar,handle,{steps:steps,mode:(horizontal?'horizontal':'vertical'),onChange:function(step){var x=(horizontal?step:0);var y=(horizontal?0:step);content.scrollTo(x,y);}}).set(0);if(!(ignoreMouse)){$$(content,scrollbar).addEvent('mousewheel',function(e){e=new Event(e).stop();var step=slider.step-e.wheel*30;slider.set(step);});}
$(document.body).addEvent('mouseleave',function(){slider.drag.stop()});}