stickyFooter

stickyFooter.js

function stickyFooter($footer){
	var $window = $(window);
	//计算位置
	function fix() {
		$footer.css({
			position: "static"
		});
		if ($window.height() < document.body.scrollHeight) {
			$footer.css({
				position: "static"
			});
		} else {
			$footer.css({
				position: "absolute",
				bottom: 0
			});
		}
	}
	fix();
	$window.resize(fix);
	var timer = setInterval(fix,500);
	return {
		fix: fix,
		destory : function(){
			$window.unbind('resize',fix);
			clearInterval(timer);
		}
	};
}

stickyFooter($("#footer"));