function toggleDisplay(str) {
	if(str == 1) { 	
		document.getElementById("studentMessage").style.visibility = "visible";
		document.getElementById("staffMessage").style.display = "none";
		document.getElementById("vendorMessage").style.display = "none";
		if(document.getElementById("studentMessage").style.display == "none" ) {
			document.getElementById("studentMessage").style.display = "";
		}
		else {
			document.getElementById("studentMessage").style.display = "none";
		}
	} else 	if(str == 2) { 	
		document.getElementById("staffMessage").style.visibility = "visible";
		document.getElementById("vendorMessage").style.display = "none";
		document.getElementById("studentMessage").style.display = "none";
		if(document.getElementById("staffMessage").style.display == "none" ) {
			document.getElementById("staffMessage").style.display = "";
		}
		else {
			document.getElementById("staffMessage").style.display = "none";
		}
	} else if(str == 3) { 	
		document.getElementById("vendorMessage").style.visibility = "visible";
		document.getElementById("staffMessage").style.display = "none";
		document.getElementById("studentMessage").style.display = "none";
		if(document.getElementById("vendorMessage").style.display == "none" ) {
			document.getElementById("vendorMessage").style.display = "";
		}
		else {
			document.getElementById("vendorMessage").style.display = "none";
		}
	}
}