(function(){function setStyleDisplay(id,status){document.getElementById(id).style.display=status;}function goTop(acceleration,time){acceleration=acceleration||0.1;time=time||16;var dx=0;var dy=0;var bx=0;var by=0;var wx=0;var wy=0;if(document.documentElement){dx=document.documentElement.scrollLeft||0;dy=document.documentElement.scrollTop||0;}if(document.body){bx=document.body.scrollLeft||0;by=document.body.scrollTop||0;}var wx=window.scrollX||0;var wy=window.scrollY||0;var x=Math.max(wx,Math.max(bx,dx));var y=Math.max(wy,Math.max(by,dy));var speed=1+acceleration;window.scrollTo(Math.floor(x/speed),Math.floor(y/speed));if(x>0||y>0){var invokeFunction="MGJS.goTop("+acceleration+", "+time+")";window.setTimeout(invokeFunction,time);}}window['MGJS']={};window['MGJS']['setStyleDisplay']=setStyleDisplay;window['MGJS']['goTop']=goTop;})();