function changeColor(which){
	$(which).bgColor = "#a8a9ad";
}
function restoreColor(which){
	$(which).bgColor = "#c6c7c9";
}
function dropMenu(which){
	if($(which).style.display == "none") {
		$(which).style.display = "block";
		$('img_'+which).src = "images/arrow_down.gif";
	} else {
		$(which).style.display = "none";
		$('img_'+which).src = "images/arrow_right.gif";
		$('td_'+which).width = "10px";
	}
}