function ChangeStyle(obj,i)
{
  // var obj = document.getElementById("CoverTable");
  switch (i)
  {
    case 0:
      obj.style.backgroundImage = "";
	  break;
	case 1:
      obj.style.backgroundImage = "url(images/r1.gif)";
      obj.style.cursor = "hand";
	  break;
	case 2:
      obj.style.backgroundImage = "url(images/r2.gif)";	
      obj.style.cursor = "hand";
	  break;
  }
}

function GrayscaleFilter(obj,f)
{
  if (f == false)
  {
  	obj.style.filter = "";
  }
  else
  {
  	obj.style.filter = "progid:DXImageTransform.Microsoft.BasicImage( Rotation=0,Mirror=0,Invert=0,XRay=0,Grayscale=1,Opacity=1.00)";  
  }
}

function moreEffect(obj,f)
{
  if (f == true)
  {
	obj.src = "images/more_line.gif";
  }
  else
  {
	obj.src = "images/more.gif";
  }
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function ShowSubscribeMenu(visibility)
{
  document.getElementById("SubscribeMenu").style.visibility = visibility;
  document.getElementById("SubscribeMenu").style.left = window.event.x + 5;
  document.getElementById("SubscribeMenu").style.top = window.event.y;
  if (document.getElementById("SubscribeMenu").style.visibility.toString() == "visible") setTimeout("ShowSubscribeMenu('hidden')", 5000);
}


function ShowOrderBackIssuesMenu(visibility)
{
  document.getElementById("OrderBackIssuesMenu").style.visibility = visibility;
  document.getElementById("OrderBackIssuesMenu").style.left = window.event.x + 5;
  document.getElementById("OrderBackIssuesMenu").style.top = window.event.y;
  if (document.getElementById("OrderBackIssuesMenu").style.visibility.toString() == "visible") setTimeout("ShowOrderBackIssuesMenu('hidden')", 5000);
}


/*
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		Yishu_mockup_01_over = newImage("images/Yishu-mockup_01-over.gif");
		preloadFlag = true;
	}
}
*/