function PlayButton(instanceID){if(instanceID!=null){Widget.apply(this,arguments);if(windowsInternetExplorer&&browserVersion>=7){this.enableIE7Hack=true;}
this.updateFromPreferences();}}
PlayButton.prototype=new Widget();PlayButton.prototype.constructor=PlayButton;PlayButton.prototype.widgetIdentifier="com-apple-iweb-widget-playbutton";PlayButton.prototype.onload=function(){}
PlayButton.prototype.onunload=function(){}
PlayButton.prototype.changedPreferenceForKey=function(key){}
PlayButton.prototype.setDivOpacity=function(playButtonDiv,opacity){if(this.enableIE7Hack){playButtonDiv.style.visibility=(opacity>0.5)?"visible":"hidden";}
else{IWSetDivOpacity(playButtonDiv,opacity,true);}}
PlayButton.prototype.updateFromPreferences=function(){var playButtonDiv=this.getElementById("play_button");playButtonDiv.ensureHasLayoutForIE();var self=this;self.opacity=0;this.setDivOpacity(playButtonDiv,self.opacity);var mouseEventDiv=this.enableIE7Hack?playButtonDiv.parentNode:playButtonDiv;mouseEventDiv.onmouseover=function(){self.p_fadeIn(playButtonDiv);mouseEventDiv.onmouseout=function(){self.p_fadeOut(playButtonDiv);}}
fixupIEPNGBGsInTree(playButtonDiv);}
PlayButton.prototype.p_fadeIn=function(playButtonDiv){var self=this;var startOpacity=this.opacity;if(this.mFadeAnimation){this.mFadeAnimation.stop();}
this.mFadeAnimation=new SimpleAnimation(function(){delete self.mFadeAnimation;});this.mFadeAnimation.pre=function(){self.opacity=startOpacity;self.setDivOpacity(playButtonDiv,self.opacity);}
this.mFadeAnimation.post=function(){self.opacity=1.0;self.setDivOpacity(playButtonDiv,self.opacity);}
this.mFadeAnimation.update=function(now){self.opacity=startOpacity+now*(1.0-startOpacity);self.setDivOpacity(playButtonDiv,self.opacity);}
this.mFadeAnimation.start();}
PlayButton.prototype.p_fadeOut=function(playButtonDiv){var startOpacity=this.opacity;if(this.mFadeAnimation){this.mFadeAnimation.stop();}
var self=this;this.mFadeAnimation=new SimpleAnimation(function(){delete self.mFadeAnimation;});this.mFadeAnimation.pre=function(){self.opacity=startOpacity;self.setDivOpacity(playButtonDiv,self.opacity);}
this.mFadeAnimation.post=function(){self.opacity=0.0;self.setDivOpacity(playButtonDiv,self.opacity);}
this.mFadeAnimation.update=function(now){self.opacity=startOpacity*(1.0-now);self.setDivOpacity(playButtonDiv,self.opacity);}
this.mFadeAnimation.start();}