function showhide(targetID) {
	//change target element mode
	var elementmode = document.getElementById(targetID).style;
	elementmode.display = (!elementmode.display) ? 'none' : '';
	if (elementmode.display == "none") {
				document.images['plusminus'].src = "/ual/asset/btnPlus.gif";
		 }
		 else {
				document.images['plusminus'].src = "/ual/asset/btnMinus.gif";
	}
}

function changetext(changee,oldText,newText) {
	//changes text in source element
	var elementToChange = document.getElementById(changee);
	elementToChange.innerHTML = (elementToChange.innerHTML == oldText) ? newText : oldText;
}

function toggle(targetID,sourceID,oldContent,newContent) {
	showhide(targetID);
	changetext(sourceID,oldContent,newContent);
}