var ACTruncate = {
	
	'truncate' : function(node) {
		
	    if(!Object.isUndefined(node) && node !=null){
		
	    	if (this.shouldTruncate(node)) {
			
			var content = node.down();
			content.setStyle({maxHeight:'none'});	
			content.setStyle({height:'112px'});		// replace maxHeight with starting height for animation
			
			// create the "more" link
			var triggerDiv = document.createElement('div');
			var triggerLink = document.createElement('a');
			var triggerText = document.createTextNode(ACStaticText.more);
			triggerLink.appendChild(triggerText);
			triggerLink.setAttribute('href','#');
			$(triggerLink).addClassName('trigger');
			triggerDiv.appendChild(triggerLink);
			node.appendChild(triggerDiv);
			
			// attach click handler
			Event.observe(triggerLink, 'click', ACTruncate.handleShowMore);
		  }
	    }
	}, 

	 'shouldTruncate' : function(node) {
		var truncate = false;
		var nodeContent = node.down(1);
		if(!Object.isUndefined(nodeContent)){
		truncate =  (nodeContent.offsetHeight > 112);
		}       

		return truncate;
     },
	
	'handleShowMore' : function(e) {
		
		var trigger = Event.element(e);			 		// user clicked this
		var content = trigger.up().previous();
		var h = content.down().offsetHeight;			// find actual height of the content
		
		content.addClassName("transition");				// set the CSS transition
		content.setStyle({height:h+'px'});				// set the new height
		trigger.update(ACStaticText.less); 				// change link to 'less'
		
		Event.stopObserving(trigger);			
		Event.observe(trigger, 'click', ACTruncate.handleShowLess);	// swap the click handler to handleShowLess()
	},
	
	'handleShowLess' : function(e) {

		var trigger = Event.element(e);			 		// user clicked this
		var content = trigger.up().previous();

		content.setStyle({height:'112px'});				// set the new height
		trigger.update(ACStaticText.more); 				// change link to 'less'
		
		Event.stopObserving(trigger);			
		Event.observe(trigger, 'click', ACTruncate.handleShowMore);	// swap the click handler to handleShowMore()
	}
};


Event.observe(window, 'load', function() {

	ACTruncate.truncate($('intro-container'));
	ACTruncate.truncate($('affected-container'));
	
});