function smoothScroll(a)
	{
		var e = document.getElementById(a);
		var end=e.offsetTop;
		var start=window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop || 0;
		var flag=(end<start)?"up":"down";

		function scrollMe(start,end,flag) {

			setTimeout(
				function(){
					if(flag=="up" && start >= end){
						start=start-(start-end)/20-1;
						window.scrollTo(0,start)
						arguments.callee(start,end,flag);

					}else if(flag=="down" && start <= end){
						start=start+(end-start)/20+1;

						window.scrollTo(0,start)
						arguments.callee(start,end,flag);

					}else{
						scrollTo(0,end);
					}
				}
				,200
			);
			
		}
		scrollMe(start,end,flag)
	}