add: img.setAttribute ("title", matchText); 
context: function insertEar (matchText, containerTag){    if (client.smileyText)        containerTag.appendChild (document.createTextNode (matchText));    var img = document.createElementNS ("http://www.w3.org/1999/xhtml",                                        "html:img");    img.setAttribute ("src", client.IMAGEDIR + "face-ear.gif");    containerTag.appendChild (img);    }
meta: 3298	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3298/e29bf1a03de5cc18d75f7a1db8b90a179a419732/static.js/clean/xul/content/static.js