var counter = 2;


function auto_rotate()
{		
		if (counter == 4) counter =1; 
		var side_bar = ".sidebar_image_"+counter;	
		$("#main_cont").css("background", "url('images/main-image-" + counter + ".png')");
		$("#main_cont").css("display","none");
		$(".main_cont").css("background","none");
		$("#main_cont").fadeIn(1100);
		$(side_bar).fadeTo(1000,0.33,function(){
		$(side_bar).fadeTo(2000,1);
		});	
			
		counter++
}


$(document).ready(function(){
	setTimeout(function(){$(".main_cont").css("background","none")},3000);
	var rotate = setInterval("auto_rotate()",3500);
});