var scrollSpeed4 = 100; 		// Speed in milliseconds
			var step4 = 1; 				// How many pixels to move per step
			var current4 = 0;			// The current pixel row
			var imageHeight4 = 4300;		// Background image height
			var headerHeight4 = 300;		// How tall the header is.
			
			//The pixel row where to start a new loop
			var restartPosition4 = -(imageHeight4 - headerHeight4);
			
			function scrollBg4(){
				
				//Go to next pixel row.
				current4 += step4;
				
				//If at the end of the image, then go to the top.
				if (current4 == restartPosition4){
					current4 = 0;
				}
				
				//Set the CSS of the header.
				$('.bg-animated-4').css("background-position",current4+"px bottom");
				
				
			}
			
			
			//Calls the scrolling function repeatedly
			var init = setInterval("scrollBg4()", scrollSpeed4);