function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		patient_over = newImage("images/patient-over.gif");
		dentist_over = newImage("images/dentist-over.gif");
		preloadFlag = true;
	}
}
var tdcolor;
function cOn(td){
	tdcolor="#C5B36C";
	textcolor="#004790";
	if(document.getElementById||(document.all && !(document.getElementById))){
		td.style.backgroundColor=tdcolor;
		td.style.color=textcolor;
	}
}

function cOut(td){
	tdcolor="#B5A35C";
	textcolor="#ffffff";
	if(document.getElementById||(document.all && !(document.getElementById))){
		td.style.backgroundColor=tdcolor;
		td.style.color=textcolor;
	}
}