var slideFunction = function() {
        
    //console.info(slideBusy);
    
	if(!slideBusy) 
	{
		if($(this).is(".active"))
			$(this).removeClass("active");
		else
			$(this).addClass("active");
			
		slideBusy = true;
		
		if(slideDown) 
		{
		    //console.info('slideDown', originalHeight);
		    /*
			$("ul#portfolio_list").hide();
			$("ul#portfolio_list").css({
				height:		0,
				opacity:	0
			});
			*/
			
			$("ul#portfolio_list").show();
			$("ul#portfolio_list").animate({
				height:		originalHeight + "px",
				opacity:	1
			}, function() {
				slideBusy = false;
				slideDown = false;
			});
		} 
		else 
		{
			$("ul#portfolio_list").show();
			$("ul#portfolio_list").css({
				height:		originalHeight + "px",
				opacity:	1
			});
			$("ul#portfolio_list").animate({
				height:		0,
				opacity:	0
			}, function() {
				$("ul#portfolio_list").hide();
				slideBusy = false;
				slideDown = true;
			});
		}
	}
};