Effect.Tooltip=Class.create();Object.extend(Object.extend(Effect.Tooltip.prototype,Effect.Base.prototype),{initialize:function(element,content){this.element=$(element);if(!this.element)throw(Effect._elementDoesNotExistError);var options=Object.extend({content:content,title:false,className:'tooltip',offset:{'x':16,'y':16}},arguments[2]||{});this.start(options);},setup:function(){this.element.observe('mousemove',this.showTip.bind(this));this.element.observe('mouseout',this.hideTip.bind(this));},buildTip:function(){this.wrapper=document.createElement('div');this.wrapper.className=this.options.className;Element.setStyle(this.wrapper,{position:'absolute',display:'none'});if(this.options.title){var title=document.createElement('div');title.className='title';Element.update(title,this.options.title);this.wrapper.appendChild(title);}
this.tip=document.createElement('div');this.tip.className='content';Element.update(this.tip,this.options.content);this.wrapper.appendChild(this.tip);document.body.appendChild(this.wrapper);},showTip:function(event){if(!this.wrapper)this.buildTip();this.positionTip(event);this.wrapper.show();},hideTip:function(){this.wrapper.hide();},positionTip:function(event){var offsets={'x':this.options.offset['x'],'y':this.options.offset['y']};var mouse={'x':Event.pointerX(event),'y':Event.pointerY(event)};var page={'x':this.viewportSize()['x'],'y':this.viewportSize()['y']};var tip={'x':mouse['x']+this.options.offset['x']+this.wrapper.getWidth(),'y':mouse['y']+this.options.offset['y']+this.wrapper.getHeight()};if(tip['x']>page['x']){offsets['x']=0-(this.wrapper.getWidth()+this.options.offset['x']);}
if(tip['y']>page['y']){offsets['y']=0-(this.wrapper.getHeight()+this.options.offset['y']);}
this.wrapper.setStyle({left:mouse['x']+offsets['x']+'px',top:mouse['y']+offsets['y']+'px'});},viewportSize:function(){var x=self.innerWidth||(document.documentElement.clientWidth||document.body.clientWidth);var y=self.innerHeight||(document.documentElement.clientHeight||document.body.clientHeight);return{'x':x,'y':y};}});