function BannerAd(prov, tag, pos, loc)
{
	document.writeln('<sc'+'ript language="javascript">');
	document.write('if (typeof(Ad_'+prov+') == "undefined") {');
	if (prov == '4ds') document.write('var OAS_sitepage = "' + tag + '";');
	document.write('document.write(\'<sc\'+\'ript language="javascript" src="http://static3.'+_SITE_DOMAIN+'/v3/js/ad_' + prov + '.js"><\/sc\'+\'ript>\');');
	document.writeln('}');
	document.writeln('</sc'+'ript>');
	document.writeln('<sc'+'ript language="javascript">');
	document.writeln('if (typeof(Ad_'+prov+') != "undefined") {');
	document.write('Ad_'+prov+'("'+tag+'","'+pos+'","'+(typeof(loc) == 'undefined' ? '' : loc)+'");');
	document.writeln('}');
	document.writeln('</sc'+'ript>');
}