// $$('a[href=http://www.jobs-ulm.de/]').each(
// 	function( lnk ){
// 		lnk.setAttribute( "target", "_blank" );
// 	}
// );
// $$('a[href=http://www.jobs-ulm.de/]')[0].setAttribute( "target", "_blank" );

Event.observe(window, 'load', function() {$$('a[href=http://www.jobs-ulm.de/]')[0].setAttribute( "target", "_blank" )});