javascript validation error

[madscr2k]

this is how i call the editor:

	<!-- editor -->
	<? include "js/editor/buttons.php"; ?>
	<iframe id="textbox" class="Eddietor" src="js/editor/editor.php"></iframe><br />
	<input type="hidden" id="content" name="content">
	<!-- /editor -->

and this is editor.js:

window.onload = function()
{
	Editor = document.getElementById('textbox').contentWindow.document;
	Editor.designMode = "on";
	document.forms[0].onsubmit = function()
	{
		var text = document.getElementById('text');
		text.value = Editor.body.innerHTML;
	}
}

function doColor(colour)
{
	document.getElementById("textbox").contentWindow.focus();
	document.getElementById("textbox").contentWindow.document.execCommand("forecolor",false, colour);
}



function doClick(command) {
document.getElementById("textbox").contentWindow.focus();
document.getElementById("textbox").contentWindow.document.execCommand(command, false, null);
}
function doLink() {
var mylink = prompt("URL:", "http://");
if ((mylink != null) && (mylink != "")) {
document.getElementById("textbox").contentWindow.focus();
document.getElementById('textbox').contentWindow.document.execCommand("CreateLink",false,mylink);
}
}
function doImage() {
myimg = prompt('URL:', 'http://');
document.getElementById("textbox").contentWindow.focus();
document.getElementById('textbox').contentWindow.document.execCommand("InsertImage", false, myimg);
}

another script i made is having problems with the ID="textbox" , it might be fixed if i change id and start using name="textbox" instead,
but i don't know how to do this in js. need to edit the editor.js and change id="textbox"->to->name="textbox"
can anyone help me? i got no idea how to use the getElementByName thingie , i'm trying to do this for 4 hours already and still no go.

appreciated.

[resdog]

If you are going to be using the name field instead of the id, you can directly access the element via dot notation:

document.formname.elementname.contentWindow.focus();

[madscr2k]

could you please give me another example of it ?
so il know where to put it exactly in js file

having troubles.