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 getBrowserPos ( )
{
	var pos = new Object ( );
	
	pos.x = 0;
	pos.y = 0;
	
	if ( ! isNaN ( window.screenX ) )
	{
		pos.x = window.screenX;
		pos.y = window.screenY;
	}
	else if ( ! isNaN ( window.screenLeft ) )
	{
		pos.x = window.screenLeft;
		pos.y = window.screenTop;
	}
	
	return pos;
}

function popUpObject ( url, name, width, height, left, top, features ) 
{
	this.url				 = url;
	this.imageUrl			 = null;
	this.name				 = name;
	this.width				 = width;
	this.height				 = height;
	this.left				 = new String ( left );
	this.top				 = new String ( top );	
	this.features			 = features;
	
	if ( this.url.match ( /\.(jpeg|jpg|gif|png)$/ ) )
	{
		this.imageUrl = this.url;
		this.url = 'about:blank';
	}

	if ( this.width != null && this.height != null )
	{
		this.features += ",width=" + this.width + ",height=" + this.height;
	}
		
	if ( this.left != null && this.top != null )
	{
		var browserPos = getBrowserPos ( );
		
		var matches = this.left.match ( /^([+-]{1})([0-9]+)$/ );
		if ( matches && matches.length )
		{
			this.left = browserPos.x + ( matches [ 1 ] == '+' ? 1 : -1 ) * Math.floor ( matches [ 2 ] );
		}
	
		matches = this.top.match ( /^([+-]{1})([0-9]+)$/ );
		if ( matches && matches.length )
		{
			this.top = browserPos.y + ( matches [ 1 ] == '+' ? 1 : -1 ) * Math.floor ( matches [ 2 ] );
		}
	
		this.features += ",left=" + this.left + ",top=" + this.top;
	}

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

	if ( ! this.popUpWindow.opener ) 
	{ 
		this.popUpWindow.opener = self;
	}
	
	if ( this.imageUrl != null )
	{
		this.popUpWindow.document.writeln ( '<html><head><title>' + this.imageUrl + '</title><script>window.innerWidth=' + this.width + '; window.innerHeight=' + this.height + ';</script></head>' );
		this.popUpWindow.document.writeln ( '<body style="margin: 0;"><img src="' + this.imageUrl + '" width="' + this.width + '" height="' + this.height + '"></body></html>' );
	}
	else
	{
		this.popUpWindow.resizeTo(this.width,this.height);
	}
	
	this.popUpWindow.focus();
}

// http://www.quirksmode.org/js/cookies.html

function createCookie(name,value,days)
{
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name)
{
	createCookie(name,"",-1);
}

