function getDutchAuctionIds()
{
	var spans = document.getElementsByTagName("SPAN");
	var len = spans.length;
	var thisSpan,myParts;
	var idList = new Array();
	var lastId = "";
	for (var i = 0; i < len; i++)
	{
		thisSpan = spans[i];
		myParts = thisSpan.className.split("_");
		if (myParts[0] == 'dutch')
		{
			// 08/09/09 dh - for detail page don't send the same item_id twice (for 2 same prices on the page)
			//idList.push(myParts[1]);
			//idList[myParts[1]] = myParts[1];
			if (myParts[1] != lastId) {
				idList.push(myParts[1]);
			}
			lastId = myParts[1];
		}
	}
	
	//idList is now complete
	return idList;
}

var xmlHttp;
function updateDutchAuctionPrices()
{
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		var newPrices = new Object();
		// 08/09/09 dh - Prices.php now checks that there is a value to return, else returns bool false,
		// so if false (or "false") is returned then do early exit (return). 
		var responseText = xmlHttp.responseText;
		//window.status = "1_responseText"=responseText;
		if (!responseText || responseText.length < 10 || responseText == "" || responseText == "false" || responseText == false || responseText == "Undefined") {
			//alert ("responseText"=responseText);
			//window.status = "2_responseText"=responseText;
		    return false;
		}
		// 08/09/09 dh - check that response has a "|" to split on (not sure if JS will assign orig value or one element array
		// or empty/null value). 
		// once we fix up detail page there will only be a single field returned so no "|" to split on and create an array.
		// alt would be to always make sure returned string contains a "|" at end but then there would be an empty element
		// in the array created from split.
		//  
		var response = responseText.split("|");
		for (var i = 0; i < response.length; i++)
		{
			if (response[i]) {
				var temp = response[i].replace(/^\s+|\s+$/g, '').split(":");
				// recreate the css class attribute (dutch_temp[0] = item_id) and the value in the span tags (temp[1] = price)
				//newPrices["dutch_"+temp[0]] = temp[1];
				// 08/10/09 dh - added a third part to what's returned - T|F (true|false) if price has changed
				// HEY - WHAT IF the oldprice is returned, that may be even better... (I don't know)
				newPrices["dutch_"+temp[0]] = { price: temp[1], is_new: temp[2] };
			}
		}
	
		var spans = document.getElementsByTagName("SPAN");
		var len = spans.length;
		var thisSpan,myParts;
		var idList = new Array();
		var spanList = new Array();
		var logoList = new Array();
		var oldpriceElement = document.getElementById("dutchprice");
		var oldprice = "";
		if (oldpriceElement) { oldprice = "" + oldpriceElement.value; }
		//var oldprice = "";
		//var oldprice = "" + oldpriceElement.value;
		for (var i = 0; i < len; i++)
		{
			thisSpan = spans[i];
			myParts = thisSpan.className.split("_");  // this comes from the DOM
			if (myParts[0] == 'dutch')
			{
				//newprice = newPrices[thisSpan.className];  // this (newPrices) comes from code above, from ajax callback
				newprice = newPrices[thisSpan.className].price;  // this (newPrices) comes from code above, from ajax callback
				//oldprice = thisSpan.innerHTML;  // old/existing price on the page right now
				if (!newprice || newprice == "Undefined")
				{
					// if price not found assume the item has expired and memcache/Prices.php didn't get any data
					// NOTE - 4/18/09 dh - ALT would be to not change the price, then if user goes to DETAIL page,
					// we can notify them that the item is expired.
					// do nothing
					// later on... Peter says that we *should* show $expired
					if (oldprice != "" && oldprice != "refresh") {
						thisSpan.innerHTML = oldprice;
					} else {
						thisSpan.innerHTML = "Refreshing";
					}
				}
				else if (newprice != '')
				{
					// only change price if diff value than what's already displayed
					if (oldprice != newprice || thisSpan.innerHTML != newprice)
					{
						if (newprice == "refresh") {
							thisSpan.innerHTML = oldprice;
						} else {
							thisSpan.innerHTML = newprice;
							if (oldpriceElement) { oldpriceElement.value = newprice; }
							if (newPrices[thisSpan.className].is_new == "T") {
								spanList.push(thisSpan);
								if (document.getElementById("dutchlogo_"+myParts[1])) {
									logoList.push(document.getElementById("dutchlogo_"+myParts[1]));
								}
							}
						}
					}
				}
			}
		}

		// animate changed prices
		if (spanList.length > 0)
		{
			$(spanList).animate({backgroundColor: 'white'},300).animate({backgroundColor: 'orange'},300).animate({backgroundColor: 'white'},300);
		}
	}
}

function doPriceCheck()
{
 	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
	{
		return;
	}
	
	var idList = getDutchAuctionIds();
	if (idList.length > 0)
	{
		var url = "http://www.pricefalls.com/get_dutch_prices.php?ids=" + idList.join(",") + "&rand=" + Math.random().toString();
		
		xmlHttp.onreadystatechange=updateDutchAuctionPrices;
		xmlHttp.open("GET",url,true);
		xmlHttp.send(null);
	}
}
function GetXmlHttpObject()
{ 
	var objXMLHttp=null;
	if (window.XMLHttpRequest)
	{
		objXMLHttp=new XMLHttpRequest();
	}
	else if (window.ActiveXObject)
	{
		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP");
	}
	return objXMLHttp;
} 

function ShowFallingPrices()
{
	doPriceCheck();
	setInterval("doPriceCheck()", 15000);
}


/*
 * jQuery Color Animations
 * Copyright 2007 John Resig
 * Released under the MIT and GPL licenses.
 */

(function(jQuery){

	// We override the animation for all of these color styles
	jQuery.each(['backgroundColor', 'borderBottomColor', 'borderLeftColor', 'borderRightColor', 'borderTopColor', 'color', 'outlineColor'], function(i,attr){
		jQuery.fx.step[attr] = function(fx){
			if ( fx.state == 0 ) {
				fx.start = getColor( fx.elem, attr );
				fx.end = getRGB( fx.end );
			}

			fx.elem.style[attr] = "rgb(" + [
				Math.max(Math.min( parseInt((fx.pos * (fx.end[0] - fx.start[0])) + fx.start[0]), 255), 0),
				Math.max(Math.min( parseInt((fx.pos * (fx.end[1] - fx.start[1])) + fx.start[1]), 255), 0),
				Math.max(Math.min( parseInt((fx.pos * (fx.end[2] - fx.start[2])) + fx.start[2]), 255), 0)
			].join(",") + ")";
		}
	});

	// Color Conversion functions from highlightFade
	// By Blair Mitchelmore
	// http://jquery.offput.ca/highlightFade/

	// Parse strings looking for color tuples [255,255,255]
	function getRGB(color) {
		var result;

		// Check if we're already dealing with an array of colors
		if ( color && color.constructor == Array && color.length == 3 )
			return color;

		// Look for rgb(num,num,num)
		if (result = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(color))
			return [parseInt(result[1]), parseInt(result[2]), parseInt(result[3])];

		// Look for rgb(num%,num%,num%)
		if (result = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(color))
			return [parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55];

		// Look for #a0b1c2
		if (result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(color))
			return [parseInt(result[1],16), parseInt(result[2],16), parseInt(result[3],16)];

		// Look for #fff
		if (result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(color))
			return [parseInt(result[1]+result[1],16), parseInt(result[2]+result[2],16), parseInt(result[3]+result[3],16)];

		// Otherwise, we're most likely dealing with a named color
		return colors[jQuery.trim(color).toLowerCase()];
	}
	
	function getColor(elem, attr) {
		var color;

		do {
			color = jQuery.curCSS(elem, attr);

			// Keep going until we find an element that has color, or we hit the body
			if ( color != '' && color != 'transparent' || jQuery.nodeName(elem, "body") )
				break; 

			attr = "backgroundColor";
		} while ( elem = elem.parentNode );

		return getRGB(color);
	};
	
	// Some named colors to work with
	// From Interface by Stefan Petre
	// http://interface.eyecon.ro/

	var colors = {
		aqua:[0,255,255],
		azure:[240,255,255],
		beige:[245,245,220],
		black:[0,0,0],
		blue:[0,0,255],
		brown:[165,42,42],
		cyan:[0,255,255],
		darkblue:[0,0,139],
		darkcyan:[0,139,139],
		darkgrey:[169,169,169],
		darkgreen:[0,100,0],
		darkkhaki:[189,183,107],
		darkmagenta:[139,0,139],
		darkolivegreen:[85,107,47],
		darkorange:[255,140,0],
		darkorchid:[153,50,204],
		darkred:[139,0,0],
		darksalmon:[233,150,122],
		darkviolet:[148,0,211],
		fuchsia:[255,0,255],
		gold:[255,215,0],
		green:[0,128,0],
		indigo:[75,0,130],
		khaki:[240,230,140],
		lightblue:[173,216,230],
		lightcyan:[224,255,255],
		lightgreen:[144,238,144],
		lightgrey:[211,211,211],
		lightpink:[255,182,193],
		lightyellow:[255,255,224],
		lime:[0,255,0],
		magenta:[255,0,255],
		maroon:[128,0,0],
		navy:[0,0,128],
		olive:[128,128,0],
		orange:[255,165,0],
		pink:[255,192,203],
		purple:[128,0,128],
		violet:[128,0,128],
		red:[255,0,0],
		silver:[192,192,192],
		white:[255,255,255],
		yellow:[255,255,0]
	};
	
})(jQuery);