var HeaderSwitch=new Class({mMaxZIndex:50,mI:0,mElements:null,mChangeGroupDelay:null,initialize:function(){this.mElements=$("intro").getElements("a");this.mElements.setStyle("opacity",0);this.changeGroup();this.startChangeGroup()},hideAllButOne:function(){for(var A=0;A<this.mElements.length;A++){if(A!=this.mI){this.mElements[A].setStyle("opacity",0)}}},changeGroup:function(){if(this.mI==3){this.mI=0}if(this.mElements[this.mI]){var A=new Fx.Morph(this.mElements[this.mI]);this.mElements[this.mI].setStyle("z-index",this.mMaxZIndex++);A.start({opacity:1});$clear(this.mDelay);this.mDelay=this.hideAllButOne.delay(10,this)}this.mI++},startChangeGroup:function(){this.mChangeGroupDelay=this.changeGroup.periodical(5000,this)}});