function doSlideSwitch(obj) {
		var $$ = obj;
		var imgAlt = $$.find('a').attr("alt"); //Get Alt Tag of Image
		var imgTitle = $$.find('a').attr("href"); //Get Main Image URL
		var imgDesc = $$.find('.block').html(); //Get HTML of block
		//var imgHeader = $$.find('h2').html();
		var imgDescHeight = $(".main_image").find('.block').height(); 

		// Calculate height of block	
		if ($(this).is(".active")) {  //If it's already active, then...
			return false; // Don't click through
		} else {
			//Animate the Teaser		
			$(".main_image img.sliderImage").animate({ opacity: 0}, 250 );
			$(".main_image .block").animate({ opacity: 0.8, marginLeft: "-600", marginTop: "-50" }, 250 , function() {
				$(".main_image img.sliderImage").attr({ src: imgTitle , alt: imgAlt}).animate({ opacity: 1}, 250 );
				$(".main_image .block").html(imgDesc).animate({ opacity: 1.0, width:"208px", marginLeft: "0", marginTop: "0" }, 400 );
				//$(".main_image .block p").animate({ width:"570px" }, 150 );
				if(imgAlt == '') $(".main_image a.playyt").hide(150);
				else $(".main_image a.playyt").attr('alt', imgAlt).show(150);
			});
			
			//$(".main_image h2").html(imgHeader);
		}

		$(".image_thumb ul li").removeClass('active'); //Remove class of 'active' on all lists
		$$.addClass('active');  //add class of 'active' on this list only
		return false;
	};