/* ######################################################################### */

function crossbrowser_return_documentobject (objectid) {
	
	if (document.getElementById) {
		return(document.getElementById(objectid));
	} else if (document.all) {
		return(document.all[objectid]);
	} else {
		return(null);
	}
	
}

/* ######################################################################### */

function toggleVisibility(destobjectid) {
	
	var obj = crossbrowser_return_documentobject(destobjectid);
	
	if (obj) {
		if (obj.style.display != 'none') {
			obj.style.display = 'none';
		} else {
			obj.style.display = '';
		}
	}

}

/* ######################################################################### */

// beni 13.05.2007

function turnOnVisibility(action, destobject, maxnumids) {
	var id = 0;
	for(i=1; i<=maxnumids; i++) {
		obj = crossbrowser_return_documentobject(destobject+i);
		if (obj && obj.style.display != 'none') {
			if(action=='next')
				id = i+1;
			else if(action=='back')
				id = i-1;
			else 
				id = action;
			obj2 = crossbrowser_return_documentobject(destobject+id);
			if(obj2)
				obj.style.display = 'none';
		}
	}

	obj = crossbrowser_return_documentobject(destobject+id);

	if (obj) {

		if (obj.style.display != 'block') {
			obj.style.display = 'block';
		} 
	}

}