rem: var oIEC = document.getElementById( target ).getElementsByTagName( "INPUT" ); 
add: var oTarget = document.getElementById( target ); var oIEC;  if ( oTarget ) oIEC = oTarget.getElementsByTagName( "INPUT" );  
context: 	setButtonsDisabled: function ( target, flag )	{		if ( !target )			return;					var oIEC = document.getElementById( target ).getElementsByTagName( "INPUT" );		if ( oIEC )		{			for( var i = 0; i < oIEC.length; i++ )			{				oIEC[i].disabled = flag;			}				}	},
meta: 855	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/855/54f69dde42940b2aa6f01a53b73eeb4fac5ea8e2/BirtUtility.js/buggy/viewer/org.eclipse.birt.report.viewer/birt/webcontent/birt/ajax/utility/BirtUtility.js