function setLayerPos(id,st) {
  var l=document.getElementById(id);
  var m=Math.round(screen.availWidth/2);
  if(screen.availWidth >800)
 {  l.style.display='block';
    l.style.left=st==1 ? 0:document.body.clientWidth-120; //汤才鹏2008.5.22，更换奥运会图片，宽度由原80（width-80）修改为120(width-120)
  }
 else
  {   l.style.display='none';}
 }

 function setLayersArray(ids,st) {
  for(var i=0;i<ids.length;i++) {
   setLayerPos(ids[i],st[i]);
  }
  Mscroll();
 }

 function setLayerMode(id) {
   if(screen.availWidth >800)
   { 
  switch(id) {
   case 'shop':
    setLayersArray(new Array('Layer09','LayerAC'),new Array(1,2));
   break;
   case '09':
    setLayersArray(new Array('LayerSH','LayerAC'),new Array(1,2));
   break;
   case 'ac':
    setLayersArray(new Array('Layer09','LayerSH'),new Array(1,2));
   break;
  } 
  } 
 }

function Mscroll() {
	    var rmenu1=document.getElementById('Layer09');
		var rmenu2=document.getElementById('LayerAC');
		var rmenu3=document.getElementById('LayerSH');

		var yMenuFrom, yMenuTo, yOffset, time;
		yMenuFrom = parseInt(rmenu1.style.top,10);
		yMenuFrom = parseInt(rmenu2.style.top,10);
		yMenuFrom = parseInt(rmenu3.style.top,10);

		yMenuTo     = document.body.scrollTop+156; // 困率 困摹
		time = 100;

		if ( yMenuFrom != yMenuTo ) {
				yOffset = Math.ceil( Math.abs( yMenuTo - yMenuFrom ) / 20 );
				if ( yMenuTo < yMenuFrom ) yOffset = -yOffset;
				rmenu1.style.pixelTop=parseInt(rmenu1.style.top,10)+yOffset;
				rmenu2.style.pixelTop=parseInt(rmenu2.style.top,10)+yOffset;
				rmenu3.style.pixelTop=parseInt(rmenu3.style.top,10)+yOffset;
				time = 10;
		}
		setTimeout ("Mscroll()", time);
}