function selectAll(){
	var excludeElement = document.getElementById("sa");
	var elements = document.getElementsByTagName("input");
	var i;
	var len = elements.length;
	for (i = 0; i < len; i++){
		if (elements[i].type == "checkbox"){
			//elements[i].checked = $excludeElement.checked;
			if (elements[i].checked != excludeElement.checked)
				elements[i].click();
		}
	}
}