var objDocumentsCurrent = document.getElementById('documentsDefault');

function documentsSwitch(strName) {

	var objDocumentsNew = document.getElementById(strName);

	if(objDocumentsCurrent==null) {
	
		objDocumentsCurrent = document.getElementById('documentsDefault');
	
	}

	objDocumentsCurrent.style.display = 'none';
	
	objDocumentsNew.style.display = 'block';

	objDocumentsCurrent = objDocumentsNew;

}