//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}


	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight);
	return arrayPageSize;
}
//
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function getPageScroll(){

	var yScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}

	arrayPageScroll = new Array('',yScroll);
	return arrayPageScroll;
}

Object.extend(Element, {
	getWidth: function(element) {
	   	element = $(element);
	   	return element.offsetWidth; 
	},
	setWidth: function(element,w) {
	   	element = $(element);
    	element.style.width = w +"px";
	},
	setHeight: function(element,h) {
   		element = $(element);
    	element.style.height = h +"px";
	},
	setTop: function(element,t) {
	   	element = $(element);
    	element.style.top = t +"px";
	},
	setLeft: function(element,t) {
	   	element = $(element);
    	element.style.left = t +"px";
	},
	setSrc: function(element,src) {
    	element = $(element);
    	element.src = src; 
	},
	setHref: function(element,href) {
    	element = $(element);
    	element.href = href; 
	},
	setInnerHTML: function(element,content) {
		element = $(element);
		element.innerHTML = content;
	},
	addClass: function(element,cName) {
		element = $(element);
		if(!element.className)
		{
			element.className = cName;
		}
		else
		{
			newClassName = element.className;
			newClassName+=" "+cName;
			element.className = newClassName;
		}
	}
});

function blurDiv(ele,timeout)
{
	var bele = $(ele);
	if(null == bele)
		return false;
		
	if(bele.hasClassName('focusdiv'))
	{
		//support delayed blurs if a timeout has been passed.
		if(timeout != undefined)
			window.setTimeout(function(){ hideDiv(bele); },timeout);
		else
			hideDiv(bele);
	}
	return 0;
}

function hideDiv(ele)
{
	var bele = $(ele);
	bele.hide();
	bele.removeClassName('focusdiv');
	new Effect.Fade('fdoverlay');

	document.body.removeChild($('fdoverlay'));
}
function focusDiv(ele,toffset,loffset)
{
	if(ele == undefined || ele == null)
		return;
	var rawEle = $(ele);
	//create an overlay object
	var myoverlay = new Element("div",{id:'fdoverlay',style:"display: none;"});

	var fEle = new Element("div",{id:'fd',className:"focusdiv " + ele});
	fEle.innerHTML = rawEle.innerHTML;
	
	//block the newly created element's close event from relocating the window viewport
	Event.observe(fEle.select('.fdclose')[0],'click',fdEventStopper.bindAsEventListener());
	
	document.body.appendChild(myoverlay);
	new Effect.Appear(myoverlay, { duration: 0.1, from: 0.0, to: 0.6 });
	document.body.appendChild(fEle);
	//scale the overlay to fit and display it
	Element.setHeight(myoverlay,document.viewport.getHeight());
	
	$('fdoverlay').onclick = function(e){ hideFocusDivs(e); };
	
	//set the top of the focus div to a good place and display it	
	//var fEleTop = Math.round(arrayPageScroll[1] + (arrayPageSize[3] / 20));
	var fEleTop = (toffset != undefined)?toffset:50;
	
	fEleTop += document.viewport.getScrollOffsets().top;
	
	Element.setTop(fEle,fEleTop);
	
	var fEleSpacerBottom = fEle.getHeight() + 20;
	fEleSpacer = new Element('div',{id:'fdbot',style:'position: absolute; height: 1px; width: 1px;'});
	//fEleSpacer.update('&nbsp;');
	Element.setTop(fEleSpacer,fEleSpacerBottom);
	fEle.insert(fEleSpacer);
	
	
	//fix overlay height for browsers that do not understand position:fixed CSS:
	var isIE6 = Prototype.Browser.IE && parseInt(navigator.userAgent.substring(navigator.userAgent.indexOf("MSIE")+5)) == 6;
	var isIOS = navigator.userAgent.indexOf("iPhone") || navigator.userAgent.indexOf("iPod") || navigator.userAgent.indexOf("iPad");
	if (isIE6 || isIOS) {
		var ieHeight = Math.max(Element.getHeight($$('body')[0]) + 50, fEleTop + fEle.getHeight() + 50);
		Element.setHeight(myoverlay,ieHeight);
	}
	
	fEle.show();
	
	eleWidth = Element.getWidth(fEle);
	
	fEleLeft = (loffset != undefined)?loffset:Math.round(document.viewport.getWidth() / 2 - eleWidth / 2);
	Element.setLeft(fEle,fEleLeft);
	
	//window.scrollTo(0,0);
	
}
function hideFocusDivs(e){
	document.body.removeChild($('fd'));
	document.body.removeChild($('fdoverlay'));
}

function fdEventStopper(e) {
	e.stop();
}