MakeAnOffer = {
	instance : null,
	getInstance : function() {
		if (MakeAnOffer.instance == null) MakeAnOffer.instance = new _MakeAnOffer();
		return MakeAnOffer.instance;
	}
}
function _MakeAnOffer() {
	this.vPositionElement = null;
	this.hPositionElement = null;
	this.myId = null;
}
_MakeAnOffer.IFRAME_ID = "MakeAnOfferIframe";
_MakeAnOffer.prototype.getIframeId = function() {
	return this.myId;
}
_MakeAnOffer.prototype.close = function(horizontalElement, verticalElement) {
	Transition.addEffect(document.body, Transition.FADE_IN, "duration=.1,interval=.1");
	document.body.effects.play(Transition.FADE_IN);
	// remove iframe so EAF entries will be removed from browser history
	document.body.removeChild(document.getElementById(_MakeAnOffer.IFRAME_ID));
}
_MakeAnOffer.prototype.getLeft = function() {
	var iframe = document.getElementById(_MakeAnOffer.IFRAME_ID);
	var element = (this.hPositionElement) ? this.hPositionElement : document.body;
	return (element.offsetWidth / 2) - (iframe.offsetWidth / 2) + getAbsOffsetLeft(element) + "px";
}
_MakeAnOffer.prototype.getTop = function() {
	var iframe = document.getElementById(_MakeAnOffer.IFRAME_ID);
	var elementHeight = (this.vPositionElement) ? this.vPositionElement.offsetHeight : document.body.clientHeight;
	return (elementHeight / 2) - (iframe.offsetHeight / 2) + document.body.scrollTop + "px";
}
_MakeAnOffer.prototype.getUrl = function(doc) {
	if (!doc) var doc = document;
	var eafUrlUtil = new URLUtility(doc);
	var params = eafUrlUtil.getParameterMap();
	for (var paramName in params) {
		if (!params[paramName]) eafUrlUtil.removeParameter(paramName);
	}
	return eafUrlUtil.getUrl();
}
_MakeAnOffer.prototype.pageLoad = function(eafContentElement) {	
	var iframe = document.getElementById(_MakeAnOffer.IFRAME_ID);
	iframe.style.width = eafContentElement.offsetWidth;
	iframe.style.height = eafContentElement.offsetHeight;
	iframe.style.top = this.getTop();
	iframe.style.left = this.getLeft();
	iframe.style.visibility = "visible";
}
_MakeAnOffer.prototype.open = function(verticalElement,pageName,vID,horizontalElement) {
	var iframe = document.createElement("iframe");
	iframe.setAttribute("id", _MakeAnOffer.IFRAME_ID);
	iframe.name = _MakeAnOffer.IFRAME_ID;
	this.myId = _MakeAnOffer.IFRAME_ID;
	iframe.style.position = "absolute";
	iframe.style.top = "0px";
	iframe.style.visibility = "hidden";
	iframe.style.zIndex = 1000;
	iframe.src = "about:blank";
	iframe.setAttribute("border", "0");
	iframe.setAttribute("frameBorder", "0");
	iframe.setAttribute("scrolling", "no");
	document.body.appendChild(iframe);
	this.hPositionElement = horizontalElement;
	this.vPositionElement = verticalElement;	
	iframe.src = "details_makeAnOffer.do?cellName=inv&widgetName=details_widget_redesign&widgetType=inventory&widgetContext=common&id=" + vID + "&pageName=" + pageName;	
	Transition.addEffect(document.body, Transition.FADE_OUT, "duration=.1,interval=.1,backgroundColor=#222222" );
	document.body.effects.play(Transition.FADE_OUT);        
	
}

if (!window.getAbsOffsetLeft) {
	function getAbsOffsetLeft(element) {
		if (element.offsetParent) return element.offsetLeft + getAbsOffsetLeft(element.offsetParent);
		else return element.offsetLeft;
	}
}
if (!window.getAbsOffsetTop) {
	function getAbsOffsetTop(element) {
		if (element.offsetParent) return element.offsetTop + getAbsOffsetTop(element.offsetParent);
		else return element.offsetTop;
	}
}