var _floatAd_id = "float_ad";
var _floatAd_x = 50, _floatAd_y = 60;
var _floatAd_xin = true, _floatAd_yin = true;
var _floatAd_delay = 20;
function floatAD() {
	var step = 1;
	var L = T = 0;
	var obj = document.getElementById(window._floatAd_id);
	var R = document.body.clientWidth - obj.offsetWidth;
	var B = document.body.clientHeight - obj.offsetHeight;
	obj.style.left = window._floatAd_x + document.body.scrollLeft;
	obj.style.top = window._floatAd_y + document.body.scrollTop;
	window._floatAd_x = window._floatAd_x + step * (window._floatAd_xin ? 1 : -2);
	if (window._floatAd_x < L) {
		window._floatAd_xin = true;
		window._floatAd_x = L;
	}
	if (window._floatAd_x > R) {
		window._floatAd_xin = false;
		window._floatAd_x = R;
	}
	window._floatAd_y = window._floatAd_y + step * (window._floatAd_yin ? 1 : -2);
	if (window._floatAd_y < T) {
		window._floatAd_yin = true;
		window._floatAd_y = T;
	}
	if (window._floatAd_y > B) {
		window._floatAd_yin = false;
		window._floatAd_y = B;
	}
}
function initFloatingAds() {
	var obj = document.getElementById(window._floatAd_id);
	var itl = setInterval("floatAD()", window._floatAd_delay);
	obj.onmouseover = function () {
		clearInterval(itl);
	};
	obj.onmouseout = function () {
		itl = setInterval("floatAD()", window._floatAd_delay);
	};
}