function changeLanguageDefinition(langAbbr) 
{ 
	try {
		with (document.getElementById("lang:" + langAbbr)) {
			style.background = "url(template/images/tab-lang-selected.gif) no-repeat;" 
			style.fontWeight = "bold";
			style.color      = "#FFFFFF";
			style.width      = "64px";
		}
	} catch (e) { }
}