working on adding codearea form field type

www/extras/TabFix.js

@@ -0,0 +1,56 @@
+
+function TabFix_keyDown(e) {    
+    var dom = document.getElementById&&!document.all;
+    e=dom? e : event;    
+    obj =dom? e.target : e.srcElement
+    
+    if (e.keyCode == 9 && obj.type && obj.type=="textarea") {
+		topScroll = obj.scrollTop;
+		leftScroll = obj.scrollLeft;
+		var position = TabFix_insertAtCursor(obj,'\t');
+
+		obj.focus();
+		obj.selectionStart=position + 1 ;		
+		obj.selectionEnd=position + 1;		
+		obj.scrollTop = topScroll;
+		obj.scrollLeft = leftScroll;
+		return false;
+    }
+    return true;
+}
+
+function TabFix_keyPress(e) {
+    var dom = document.getElementById&&!document.all;
+    e=dom? e : event;    
+    if (e.keyCode == 9) {
+	return false;
+    }
+    return true;
+}
+
+function TabFix_insertAtCursor(myField, myValue) {
+	//IE 
+	if (document.selection) {
+		myField.focus();
+		sel = document.selection.createRange();
+		sel.text = myValue;
+	}
+	//MOZILLA
+	else if (myField.selectionStart || myField.selectionStart == '0') {
+		var startPos = myField.selectionStart;
+		var endPos = myField.selectionEnd;
+		myField.value = myField.value.substring(0, startPos) + myValue + myField.value.substring(endPos, myField.value.length);
+		return startPos;
+	} else {
+		myField.value += myValue;
+	}
+	return 0;
+}
+
+/*
+We'd uncomment the following lines if we wanted
+to apply this to all text areas, which we don't
+
+document.onkeypress=TabFix_keyPress;
+document.onkeydown=TabFix_keyDown;
+*/