function getWindowHeight() { 
	var windowHeight = 0; 
	if (typeof(window.innerHeight) == 'number') { 
		windowHeight = window.innerHeight; 
	} 
	else { 
		if (document.documentElement && document.documentElement.clientHeight) { 
			windowHeight = document.documentElement.clientHeight; 
		} 
		else { 
			if (document.body && document.body.clientHeight) { 
				windowHeight = document.body.clientHeight; 
			} 
		} 
	} 
	return windowHeight; 
} 
	function setFooter() { 
		if (document.getElementById) { 
			var windowHeight = getWindowHeight(); 
			if (windowHeight > 0) { 
				var contentHeight = document.getElementById('general').offsetHeight; 
				var footerElement = document.getElementById('footer'); 
				var footerHeight  = footerElement.offsetHeight;
				if (windowHeight > (contentHeight + footerHeight)) {
					//coloca footer pra baixo
					footerElement.style.position = 'absolute';
					footerElement.style.top = (windowHeight - (footerHeight)) + 'px'; 
				} else {
					//deixa footer onde está
					footerElement.style.position = 'static';
					footerElement.style.top = ""; 
				}
				/*
				if (windowHeight - (contentHeight + footerHeight) >= 0) { 
					footerElement.style.position = 'relative'; 
					footerElement.style.top = (windowHeight - (contentHeight + footerHeight)) + 'px'; 
				} 
				else { 
					footerElement.style.position = 'static'; 
				}
				*/
			} 
		} 
	} 
/*        window.onload = function() { 
            setFooter(); 
        } 
        window.onresize = function() { 
            setFooter(); 
        }
*/
    $(function(){
		//onload
		setFooter();
    });
	$(window).resize(function(){
		//onresize
		setFooter();
	});