function getElementStyle(id) {
	if(document.getElementById) {
		var elem = document.getElementById(id);
		if(elem) {
			return elem.currentStyle || document.defaultView.getComputedStyle(elem, '');
		}
	}
}
function setElementBCById(id, value) {
	if(document.getElementById) {
		var elem = document.getElementById(id, value);
		if(elem) {
			elem.style.backgroundColor = value;
		}
	}
}
function setElementClassById(id, value) {
	if(document.getElementById) {
		var elem = document.getElementById(id);
		if(elem) {
			elem.className = value;
		}
	}
}