function expand(txtDiv,imgID,expandSRC,contractSRC) {
	// Get the current display value of the text layer
	currDisplay = document.getElementById(txtDiv).style.display;
	// Figure out what we'll change things to
	if (currDisplay == "none") {
		newDisplay = "block";
		imgSRC = contractSRC;
	} else {
		newDisplay = "none";
		imgSRC = expandSRC;
	}
	// Change the image
	document[imgID].src = imgSRC;
	// Toggle the layer
	document.getElementById(txtDiv).style.display = newDisplay;
}