var o=document.getElementById("Mask");var i=0;var k=0;var t=80;var status=1;function change(){if(status==0)
k=i;else
k=t-i;if(document.all)
o.style.filter="Alpha(Opacity="+k+")";else
o.style.opacity=k/100;if(i<t)
i=i+30;else
{if(status==1)
{document.getElementById('Mask').style.display='none';}
clearInterval(tttHandle);}}
var tttHandle=null;function Mask(){i=0;status=(status==0)?1:0;if(status==0)
{document.getElementById('Mask').style.display='';document.getElementById('TipInfoWindow').style.display='';}
else
{document.getElementById('TipInfoWindow').style.display='none';}
tttHandle=window.setInterval(change,1);}