Something

function init_wysiwyg(){	if (navigator.product == 'Gecko')	{		document.write('<iframe id="wysiwyg" style="width: 100%; height: 300px; border-width: 0px; direction: rtl;"></iframe>');		document.getElementById("wysiwyg").contentDocument.designMode = "on";	}	else if ((navigator.userAgent.toLowerCase().indexOf('msie') != -1) && navigator.product != 'Gecko')	{		document.write('<div id="wysiwyg" style="width: 100%; height: 300px; border-width: 0px; direction: rtl;" contenteditable="true"></div>');	}}