var isExtended = 0;
var height = 600;
var width = 292;
var slideDuration = 1000;
var opacityDuration = 1500;

function extendContract(){
	
	if(isExtended == 0){

		sideBarSlide(height, height, 0, width);
		
		sideBarOpacity(0, 1);

		isExtended = 1;		
				
		// make expand tab arrow image face left (inwards)
		//$('sideBarTab').childNodes[0].src = $('sideBarTab').childNodes[0].src.replace(/(\.[^.]+)$/, '-active$1');
		//alert(('sideBarTab').childNodes[0].src);
		var img = document.getElementById("sideBarImage");		
		img.src = "images/slide-button-active.gif";
		
	}
	else{

		sideBarSlide(height, height, width, 0);
		
		sideBarOpacity(1, 0);
		
		isExtended = 0;

		setTimeout("activateSlideButton()", 2000);		
	}

}

function activateSlideButton() {
	// make expand tab arrow image face right (outwards)
	var img = document.getElementById("sideBarImage");
	img.src = "images/slide-button.gif";
	//$('sideBarTab').childNodes[0].src = $('sideBarTab').childNodes[0].src.replace(/-active(\.[^.]+)$/, '$1');
	//alert(('sideBarTab').childNodes[0].src);

}

function sideBarSlide(fromHeight, toHeight, fromWidth, toWidth){
		var myEffects = new Fx.Styles('sideBarContents', {duration: slideDuration, transition: Fx.Transitions.linear});
		myEffects.custom({
			 'height': [fromHeight, toHeight],
			 'width': [fromWidth, toWidth]
		});
}

function sideBarOpacity(from, to){
		var myEffects = new Fx.Styles('sideBarContents', {duration: opacityDuration, transition: Fx.Transitions.linear});
		myEffects.custom({
			 'opacity': [from, to]
		});
}

function init() {
	$('sideBarTab').addEvent('click', function() { extendContract() });	
}

window.addEvent('load', function(){init()});