function MM_swapImgRestore() {
  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() {
  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) {
  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() {
  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];}
}

// Determine browser and version.

function Browser()
{
	var ua, s, i;
	
	this.isIE = false;
	this.isNS = false;
	this.version = null;
	
	ua = navigator.userAgent;
	
	s = "MSIE";
	if ( (i = ua.indexOf(s)) >= 0 )
	{
		this.isIE = true;
		this.version = parseFloat(ua.substr(i + s.length));
		return;
	}
	
	s = "Netscape6/";
	if ( (i = ua.indexOf(s)) >= 0 )
	{
		this.isNS = true;
		this.version = parseFloat(ua.substr(i + s.length));
		return;
	}
	
	// Treat any other "Gecko" browser as NS 6.1.
	
	s = "Gecko";
	if ( (i = ua.indexOf(s)) >= 0 )
	{
		this.isNS = true;
		this.version = 6.1;
		return;
	}
}

var browser = new Browser();

// Global object to hold drag information.

var dragObj = new Object();
dragObj.zIndex = 0;

function dragStart(event, id)
{
	var el;
	var x, y;
	
	// If an element id was given, find it. Otherwise use the element being
	// clicked on.
	
	if ( id )
		dragObj.elNode = document.getElementById(id);
	else
	{
		if ( browser.isIE ) dragObj.elNode = window.event.srcElement;
		if ( browser.isNS ) dragObj.elNode = event.target;
		
		// If this is a text node, use its parent element.
		
		if ( dragObj.elNode.nodeType == 3 ) dragObj.elNode = dragObj.elNode.parentNode;
	}
	
	// Get cursor position with respect to the page.
	
	if ( browser.isIE )
	{
		x = window.event.clientX + document.documentElement.scrollLeft
		+ document.body.scrollLeft;
		y = window.event.clientY + document.documentElement.scrollTop
		+ document.body.scrollTop;
	}
	if ( browser.isNS )
	{
		x = event.clientX + window.scrollX;
		y = event.clientY + window.scrollY;
	}
	
	// Save starting positions of cursor and element.
	
	dragObj.cursorStartX = x;
	dragObj.cursorStartY = y;
	dragObj.elStartLeft = parseInt(dragObj.elNode.style.left, 10);
	dragObj.elStartTop = parseInt(dragObj.elNode.style.top, 10);
	
	if ( isNaN(dragObj.elStartLeft) ) dragObj.elStartLeft = 0;
	if ( isNaN(dragObj.elStartTop) ) dragObj.elStartTop  = 0;
	
	// Update element's z-index.
	
	dragObj.elNode.style.zIndex = ++dragObj.zIndex;
	
	// Capture mousemove and mouseup events on the page.
	
	if ( browser.isIE )
	{
		document.attachEvent("onmousemove", dragGo);
		document.attachEvent("onmouseup", dragStop);
		window.event.cancelBubble = true;
		window.event.returnValue = false;
	}
	if ( browser.isNS )
	{
		document.addEventListener("mousemove", dragGo, true);
		document.addEventListener("mouseup", dragStop, true);
		event.preventDefault();
	}
}

function dragGo(event)
{
	var x, y;
	
	// Get cursor position with respect to the page.
	
	if ( browser.isIE )
	{
		x = window.event.clientX + document.documentElement.scrollLeft + document.body.scrollLeft;
		y = window.event.clientY + document.documentElement.scrollTop + document.body.scrollTop;
	}
	if ( browser.isNS )
	{
		x = event.clientX + window.scrollX;
		y = event.clientY + window.scrollY;
	}
	
	// Move drag element by the same amount the cursor has moved.
	
	dragObj.elNode.style.left = (dragObj.elStartLeft + x - dragObj.cursorStartX) + "px";
	dragObj.elNode.style.top = (dragObj.elStartTop + y - dragObj.cursorStartY) + "px";
	
	if ( browser.isIE )
	{
		window.event.cancelBubble = true;
		window.event.returnValue = false;
	}
	if ( browser.isNS ) event.preventDefault();
}
 
function dragStop(event)
{
	// Stop capturing mousemove and mouseup events.
	
	if ( browser.isIE )
	{
		document.detachEvent("onmousemove", dragGo);
		document.detachEvent("onmouseup", dragStop);
	}
	if ( browser.isNS )
	{
		document.removeEventListener("mousemove", dragGo, true);
		document.removeEventListener("mouseup", dragStop, true);
	}
}