$(function(){
	$("#steps .st").mouseenter(function(){		
		$("#steps .st_active").animate({ height:"0px"}, 600);
		var stepClass = $(this).attr("class");		
		stepClass = stepClass.replace(/st st_background /, "");		
		var height_active="10px";		
		if(( stepClass=="st_one") || ( stepClass=="st_five")){ height_active="279px";}
		if(( stepClass=="st_two") || ( stepClass=="st_four")){ height_active="309px";}
		if ( stepClass=="st_three"){ height_active = "339px"}		
		$("." + stepClass + ':not(.st_background)').animate({height:height_active}, 600);		
		$("#steps .st_active").removeClass("st_active");		
		$("." + stepClass + ':not(.st_background)').addClass("st_active");	
	})
})