window.onscroll=function(){
				var position, controls;
				controls = document.getElementById('paging_controls');
				if(controls){
					if(navigator.appName == "Microsoft Internet Explorer") position = document.body.scrollTop;
					else position = window.pageYOffset;
					if(position > 30) controls.style.top = position + 'px';
					else controls.style.top = '30px';
				}
			}