function calloutClick(callObj) {
	var callItems = ["co_banking","co_autocenter","co_insurance","co_studentloan"];
	
	var currentNav = document.getElementById(callObj);
	currentNav.className="calloutClicked";
	
	for(i = 0; i < callItems.length; i++) {
		calloutImgID=callItems[i] + "_img";
		calloutTxtID=callItems[i] + "_txt";
		if (RegExp(callItems[i]).test(callObj)) {
			document.getElementById(calloutImgID).className="expanded";
			document.getElementById(calloutTxtID).className="expanded";
		} else {
			document.getElementById(callItems[i]).className="";
			document.getElementById(calloutImgID).className="collapsed";
			document.getElementById(calloutTxtID).className="collapsed";
		}
	}
	
}