var newWindow;

function openWindow(source,width,height,resize){
var rSize = "no";
var arg1 = arguments[1];
var arg2 = arguments[2];

if(arguments.length=4) rSize = resize;
	sWidth = (arg1.length>0)?arguments[1]:'550';
	sHeight= (arg2.length>0)?arguments[2]:'450';
		newWindow = window.open(source,null,
				"height=" + sHeight + ",width=" + sWidth + ",status=no,toolbar=no,menubar=no,location=no,scrollbars=yes,resizable=" + rSize);
		newWindow.focus();
}

function showQuestion(trId) {
	var tr = document.getElementById(trId);
	var img = tr.previousSibling.children[0].children[0].children[0];
	tr.className = (tr.className=="trHidden")?'trVisible':'trHidden';
	img.src = (tr.className=="trHidden")?"../Images/plusSign.gif":"../Images/minusSign.gif";
}