function startAnimation() {

	var mainDivElement = document.getElementById('tab_content1');
	var addItem = function(e, f) {
		var hideSlideshow = $('rotator');
		if(hideSlideshow != null){ //only hide if slideshow is not already hidden
			hideSlideshow.innerHTML="";
			hideSlideshow.style.display="none";
		}
		if(mainDivElement.hasChildNodes()) {

		var newItem = document.createElement('div');
		
		/****  WHEN USER CLICKS A TAB CHANGE THE MAIN IMAGE, BUTTON, AND FOOTER****/
		if (f == '1'){
			 newItem.innerHTML = rotating_imgs[0];
			 $('main_button').replace(button_imgs[0]);
			$('main_button').innerHTML;
			$('main_footer').replace(footer_imgs[0]);
			$('main_footer').innerHTML;
			$('tab1').addClassName('selected');
			$('tab2').removeClassName('selected');
			$('tab3').removeClassName('selected');
			$('tab4').removeClassName('selected');
			
			 
		}else if (f == '2'){
			newItem.innerHTML = rotating_imgs[1];
			$('main_footer').replace(footer_imgs[1]);
			$('main_footer').innerHTML;
			$('main_button').replace(button_imgs[1]);
			$('main_button').innerHTML;
			$('tab2').addClassName('selected');
			$('tab1').removeClassName('selected');
			$('tab3').removeClassName('selected');
			$('tab4').removeClassName('selected');
			

		}else if (f == '3'){
			newItem.innerHTML = rotating_imgs[2];
			$('main_footer').replace(footer_imgs[2]);
			$('main_footer').innerHTML;
			$('main_button').replace(button_imgs[2]);
			$('main_button').innerHTML;
			$('tab3').addClassName('selected');
			$('tab2').removeClassName('selected');
			$('tab1').removeClassName('selected');
			$('tab4').removeClassName('selected');
			
				
		}else{
		
			newItem.innerHTML = rotating_imgs[3];
			$('main_footer').replace(footer_imgs[3]);
			$('main_footer').innerHTML;
			$('main_button').replace(button_imgs[3]);
			$('main_button').innerHTML;
			$('tab4').addClassName('selected');
			$('tab2').removeClassName('selected');
			$('tab3').removeClassName('selected');
			$('tab1').removeClassName('selected');
			
		}
		
		
		mainDivElement.replaceChild(newItem, mainDivElement.lastChild);

		var fadeInAnim = new YAHOO.util.Anim(newItem, { opacity: {from: .15, to: 1} }, 1.5 );
		fadeInAnim.animate();
		}
		
		return false;
	}
	
	var removeItem = function(e) {

		if(mainDivElement.hasChildNodes()) {
		
			var handleAnimEnd = function() {
				mainDivElement.removeChild(mainDivElement.lastChild);
			}
			
			var fadeOutAnim = new YAHOO.util.Anim(mainDivElement.lastChild, { opacity: {to: 0} }, 1 );
			fadeOutAnim.onComplete.subscribe(handleAnimEnd);
			fadeOutAnim.animate();
		}
		
		return false;
	}

	
	YAHOO.util.Event.addListener('add', 'click', addItem, '1');
	YAHOO.util.Event.addListener('add2', 'click', addItem, '2');
	YAHOO.util.Event.addListener('add3', 'click', addItem, '3');
	YAHOO.util.Event.addListener('add4', 'click', addItem, '4');
	YAHOO.util.Event.addListener('remove', 'click', removeItem);
}


Event.observe(window,'load', function () {preloader(); startAnimation(); so_init();});
//Event.observe(window.document.body, 'load', startAnimation());

//Event.observe(window.document.body,'load', so_init());