function atualizarTela() {
	// alert(document.body.clientHeight);
	// document.getElementById("centro").style.height = document.body.clientHeight - 220;
	// alert( BrowserDetect.browser );
	// alert( BrowserDetect.version );
	// alert( BrowserDetect.OS );
	
	/*
	try {
		if( BrowserDetect.browser != "Explorer" ) {
			document.getElementById("box1").style.width = "30%";
			document.getElementById("box2").style.width = "30%";
			document.getElementById("box3").style.width = "30%";
		}
	} catch(e) {
	}
	*/
}

function openMenu(submenu){
	var menu = document.getElementById("menuMain");
	var obj = getElementByClassName(menu, submenu);
	obj.style.display = "block";
}

function closeMenu(submenu){
	var menu = document.getElementById("menuMain");
	var obj = getElementByClassName(menu, submenu);
	obj.style.display = "none";
}

function getElementByClassName(src, className){
	var element = src.getElementsByTagName('*');
	for(var i=0; i<element.length; i++) {
		if(element[i].className==className) {
			return element[i];
		}
	}
	return null;
}