var documentWrite = document.write;
var documentWriteLn = document.writeln;
var embedSrc;

function captureWrites ( )
{
	embedSrc = '';
	document.write = function ( string ) { embedSrc += string; };
	document.writeln = function ( string ) { embedSrc += string + "\n"; };
}

function releaseWrites ( )
{
	document.write = documentWrite;
	document.writeln = documentWriteLn;
	document.write ( embedSrc );
	embedSrc = '';
}

function swapImgRestore() {
	var i,x,a=document.sr; 
	for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) {
		// XXX Causes problems with IE.
		// x.height = x.oHeight;
		// x.width = x.oWidth;
		x.src=x.oSrc;
	}
}

function 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=findObj(n,d.layers[i].document);
	if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function swapImage() {
	var i,j=0,x,a=swapImage.arguments;
	document.sr=new Array;
	for(i=0;i<(a.length-2);i+=3)
	if ((x=findObj(a[i]))!=null){
	document.sr[j++]=x;
	if(!x.oSrc) {
		x.oSrc=x.src;
		x.oWidth = x.width;
		x.oHeight = x.height;
	}
	x.src=a[i+2];}
}

function swapImage2() {
	var i,j=0,x,a=swapImage2.arguments;
	document.sr=new Array;
	for(i=0;i<a.length;i+=4)
	if ((x=findObj(a[i]))!=null){
	document.sr[j++]=x;
	if(!x.oSrc) {
		x.oSrc=x.src;
		x.oWidth = x.width;
		x.oHeight = x.height;
	}
	x.src=a[i+1];
	x.width=a[i+2];
	x.height=a[i+3];
	}
}

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

function preloadImageList ( )
{
	if ( iL )
	{
		var d = document; 
		
		if ( d.images )
		{ 
			if ( ! d.p ) 
				d.p = new Array();

			var i, j = d.p.length;

			for ( i = 0; i < iL.length; i++ )
			{
				if ( iL[i].indexOf ( "#" ) != 0)
				{ 
					d.p[j]=new Image; 
					d.p[j++].src=iL[i];
				}
			}
		}
	}
}

function popUp ( url, name, width, height, left, top, features ) 
{
	new popUpObject ( url, name, width, height, left, top, features );
}

function popUpObject ( url, name, width, height, left, top, features) 
{
	this.url				 = url;
	this.name				 = name;
	this.width				 = eval (width);
	this.height				 = eval (height);
	this.left				 = left;
	this.top				 = top;	
	this.features			 = features;
	
	if ( this.features == null )
	{
		this.features = 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=1,resizable=1';
	}

	this.width  = this.width  > screen.availWidth  - 30 ? screen.availWidth  - 30 : this.width;
	this.height = this.height > screen.availHeight - 60 ? screen.availHeight - 60 : this.height;
	
	this.construct();
}

popUpObject.prototype.construct = function ( )
{	
	var features = { width: null, height: null, left: null, top: null };
	
	for ( var feature in features )
	{
		if ( this [ feature ] != null )
		{
			this.features += "," + feature + "=" + this [ feature ];
		}
	}

	this.popUpWindow = window.open ( this.url, this.name, this.features );

	if ( ! this.popUpWindow.opener ) 
	{ 
		this.popUpWindow.opener = self;
	}
	
	this.popUpWindow.focus();
}

function showHideLayers() {
	var i,p,v,obj,h=0,args=showHideLayers.arguments;
	for (i=0; i<(args.length-2); i+=3) 
		if ((obj=findObj(args[i]))!=null) 
		{ 
			v=args[i+2];
			if (obj.style) { 
				obj=obj.style;
				if ( v == 'show' || v == 'visible' )
				{
					h = 'auto';
				}
				v=(v=='show')?'visible':(v=='hide')?'hidden':v; 
			}
			obj.visibility=v;
			obj.height=h; 
		}
}

function showHideLayers2() {
	var i,p,v,obj,b='none',args=showHideLayers2.arguments;
	for (i=0; i<(args.length-2); i+=3) 
		if ((obj=findObj(args[i]))!=null) 
		{ 
			v=args[i+2];
			if (obj.style) { 
				obj=obj.style;
				if ( v == 'show' || v == 'visible' )
				{
					b = 'block';
				}
			}
			obj.display=b;
		}
}

// Requires Tween.js
//
function styleToNumber ( style, defaultValue )
{
	var value = defaultValue;
	
	if ( style != null && style.length )
	{
		var found = style.match ( /^(-?\d+)/ );
		value = found != null && found.length > 0 ? Number ( found [ 0 ] ) : defaultValue;
	}

	return value;	
}

function toggleElement ( elementId, initialState, time )
{
	var element = document.getElementById ( elementId );
	
	if ( element.basikToggleTween != null )
	{
		element.basikToggleTween.stop ( );
	}
	
	if ( element.basikOpen == null )
	{
		element.basikOpen = initialState == "open" ? true : false;
	}
	
	var currentHeight = styleToNumber ( element.style.height, 0 );
	
	if ( element.basikOpen )
	{
		element.basikToggleTween = new Tween ( element.style, 'height', Tween.strongEaseOut, currentHeight, 0, time == null ? .5 : time, 'px' );
	}
	else
	{
		if ( element.basikFullHeight == null )
		{
			element.style.visibility = "hidden";
			element.style.height = "auto";
			element.basikFullHeight = element.offsetHeight;
			element.style.height = currentHeight + "px";
		}
		
		element.style.visibility = "visible";
		
		element.basikToggleTween = new Tween ( element.style, 'height', Tween.strongEaseOut, currentHeight, element.basikFullHeight, time == null ? .5 : time, 'px' );
	}
	
	element.basikOpen = ! element.basikOpen;
	
	element.basikToggleTween.start ( );
	
	element.basikToggleTween.onMotionFinished = function ( event )
		{
			var style = event.target.obj;
			
			style.visibility = style.height == "0px" ? "hidden" : "visible";
		};

	return element.basikOpen;
}

function moveElement ( elementId, style, delta, moveMin, moveMax, time )
{
	var atLimit = false;
	
	if ( delta == null || delta == 0 )
	{
		return atLimit;
	}
	
	var element = document.getElementById ( elementId );
	
	if ( element.basikMoveTween != null )
	{
		element.basikMoveTween.stop ( );
	}
	
	var currentPosition = styleToNumber ( element.style [ style ], 0 );
	
	if ( element.basikTarget == null )
	{
		element.basikTarget = currentPosition;
	}
	
	element.basikTarget += delta;
	
	if ( element.basikTarget <= moveMin )
	{
		element.basikTarget = moveMin;
		atLimit = true;
	}
	
	if ( element.basikTarget >= moveMax )
	{
		element.basikTarget = moveMax;
		atLimit = true;
	}
	
	element.basikMoveTween = new Tween ( element.style, style, Tween.strongEaseOut, currentPosition, element.basikTarget, time == null ? .5 : time, 'px' );
	
	element.basikMoveTween.start ( );
	
	return atLimit;
}

function fadeElement ( elementId, fadeIn, time )
{
	var element = document.getElementById ( elementId );
	
	if ( element.basikFadeTween != null )
	{
		element.basikFadeTween.stop ( );
	}
	
	if ( element.basikOpacity == null )
	{
		var currentAlpha;
		
		currentAlpha = styleToNumber ( element.style.opacity, null );
	
		if ( currentAlpha == null )
			currentAlpha = styleToNumber ( element.style.MozOpacity, null );
	
		if ( currentAlpha == null )
			currentAlpha = styleToNumber ( element.style.KhtmlOpacity, null );
		
		if ( currentAlpha == null )
			currentAlpha = 1;
		
		element.basikOpacity = currentAlpha * 100;
	}
	
	// Going to 100 on Safari makes the element fade up and then out so we stop
	// at 99.99.
	//
	element.basikFadeTween = new Tween ( element, "basikOpacity", Tween.strongEaseOut, Number ( element.basikOpacity ), Number ( fadeIn ? 99.99 : 0.01 ), Number ( time == null ? .5 : time ), 0 );
	
	element.basikFadeTween.onMotionChanged = function ( event )
		{
			var style = event.target.obj.style;
			var opacity = event.target._pos / 100;
			setOpacityStyle ( style, opacity );
		};

	element.basikFadeTween.start ( );
	
	return element.basikFadeTween;
}

function setOpacityStyle ( style, opacity )
{
	style.opacity = opacity;
	style.MozOpacity = opacity;
	style.KhtmlOpacity = opacity;
	style.filter = "alpha(opacity=" + ( opacity * 100 ) + ")"; 
}