function initMoving(target, position, topLimit, btmLimit) {
		if (!target)
			return false;
	
		var obj = target;
		obj.initTop = position;
		obj.topLimit = topLimit;
		obj.bottomLimit = Math.max(document.documentElement.scrollHeight, document.body.scrollHeight) - btmLimit - obj.offsetHeight;
	
		obj.style.position = "absolute";
		obj.top = obj.initTop;
		obj.left = obj.initLeft;
	
		if (typeof(window.pageYOffset) == "number") {	//WebKit
			obj.getTop = function() {
				return window.pageYOffset;
			}
		} else if (typeof(document.documentElement.scrollTop) == "number") {
			obj.getTop = function() {
				return Math.max(document.documentElement.scrollTop, document.body.scrollTop);
			}
		} else {
			obj.getTop = function() {
				return 0;
			}
		}
	
		if (self.innerHeight) {	//WebKit
			obj.getHeight = function() {
				return self.innerHeight;
			}
		} else if(document.documentElement.clientHeight) {
			obj.getHeight = function() {
				return document.documentElement.clientHeight;
			}
		} else {
			obj.getHeight = function() {
				return 500;
			}
		}
	
		obj.move = setInterval(function() {
			if (obj.initTop > 0) {
				pos = obj.getTop() + obj.initTop;
			} else {
				pos = obj.getTop() + obj.getHeight() + obj.initTop;
				//pos = obj.getTop() + obj.getHeight() / 2 - 15;
			}
	
			if (pos > obj.bottomLimit)
				pos = obj.bottomLimit;
			if (pos < obj.topLimit)
				pos = obj.topLimit;
	
			interval = obj.top - pos;
			obj.top = obj.top - interval / 3;
			obj.style.top = obj.top + "px";
		}, 30)
	}