var msgBoxEnlarged = false;
var msgBoxWidth = null;
var msgBoxHeight = null;


function checkFieldValue(obj) {
	if (obj.value.substr(0,1) == '<') obj.value='';
}

function validateForm(f) {
	f.submitButton.value= '... Ihr Beitrag wird geschrieben - bitte etwas Geduld ...';
	f.submitButton.disabled = true;
}

function resizeTextarea(obj) {
	var msgBox = document.getElementById(obj);
	if (msgBoxEnlarged == false) {
		msgBoxWidth = msgBox.style.width;
		msgBoxHeight = msgBox.rows;
		msgBox.style.width ="99%";
		msgBox.rows = msgBoxHeight*2;
		msgBoxEnlarged = true;
		document.getElementById("resizeButton").value = "Eingabefeld verkleinern";
		if (document.getElementById("msgHelp")) {
			document.getElementById("msgHelp").style.visibility = "hidden";
			document.getElementById("msgHelp").style.position= "absolute";
		}
	} else {
		document.getElementById("resizeButton").value = "Eingabefeld vergrößern";
		msgBox.style.width=msgBoxWidth;
		msgBox.rows=msgBoxHeight;
		msgBoxEnlarged = false;
		if (document.getElementById("msgHelp")) {
			document.getElementById("msgHelp").style.visibility = "visible";
			document.getElementById("msgHelp").style.position= "relative";		
		}
	}
}