Leere E-Mail-Ansicht

function initEMailTextArea(code)
{
	var iframe = EBID('textArea'), lastSize = 0, hasRendered = false;
	if(!iframe) return;

	var resolveDoc = function()
	{
		return iframe.contentDocument || (iframe.contentWindow && iframe.contentWindow.document) || null;
	};

	var renderIframeHTML = function()
	{
		if(!iframe) return null;

		// Firefox-safe: srcdoc bevorzugen (kein about:blank load-race)
		if('srcdoc' in iframe)
		{
			try { iframe.srcdoc = code; } catch(e) {}
			return resolveDoc();
		}

		// Fallback: document.write
		var d = resolveDoc();
		if(!d) return null;

		try {
			d.open();
			d.write(code);
			d.close();
		} catch(e) {}

		return d;
	};

	var resCB = function()
	{
		var d = resolveDoc();
		if(!d) { window.setTimeout(resCB, 500); return; }

		try
		{
			var h = 0;
			var el = d.getElementById('__bmMailText');

			if(el)
				h = el.clientHeight || 0;
			else if(d.documentElement)
				h = d.documentElement.scrollHeight || 0;

			var iframeHeight = iframe.offsetHeight || iframe.clientHeight || 0;

			if(h > lastSize + 60 && h > iframeHeight + 20)
			{
				iframe.style.height = (h > 140 ? (h + 60) : 200) + 'px';
				lastSize = h;
			}
		}
		catch(e) {}

		window.setTimeout(resCB, 500);
	};

	var cb = function()
	{
		if(!iframe) return;

		// nur einmal rendern, danach kein reliance auf load-event
		if(!hasRendered)
		{
			var rendered = renderIframeHTML();
			if(!rendered) { window.setTimeout(cb, 50); return; }
			hasRendered = true;
			try { removeEvent(iframe, 'load', cb); } catch(e) {}
		}

		var d = resolveDoc();
		if(!d) { window.setTimeout(cb, 50); return; }

		var mm = function(event)
		{
			if(typeof(parent._hSepDragging) == 'undefined') return;
			if(!parent._hSepDragging && !parent._vSepDragging) return;

			if(parent.document.createEvent)
			{
				var ev = parent.document.createEvent('MouseEvents');
				ev.initMouseEvent('mousemove', true, true, window, 0,
					event.screenX, event.screenY,
					event.screenX - parent.diffScreenClientX,
					event.screenY - parent.diffScreenClientX,
					false, false, false, false, 0, null);
				parent.document.dispatchEvent(ev);
			}
		};

		var mc = function(event)
		{
			if(parent.document.createEvent)
			{
				var ev = parent.document.createEvent('MouseEvents');
				ev.initMouseEvent('mouseup', true, true, window, 0,
					event.screenX, event.screenY,
					event.screenX - parent.diffScreenClientX,
					event.screenY - parent.diffScreenClientX,
					false, false, false, false, 0, null);
				parent.document.dispatchEvent(ev);
			}
		};

		addEvent(d, 'mousemove', mm);
		addEvent(d, 'click', mc);

		resCB();
	};

	// alte WebKit/Opera-Logik behalten, aber immer cb einmal triggern
	if(/WebKit/i.test(navigator.userAgent) || /Opera/i.test(navigator.userAgent))
	{
		var _isLoaded = false;
		setInterval(function()
		{
			if(/loaded|complete/.test(document.readyState))
			{
				if(!_isLoaded) cb();
				_isLoaded = true;
			}
			else
				_isLoaded = false;
		}, 50);
	}
	else
		addEvent(iframe, 'load', cb);

	window.setTimeout(cb, 0);
}