function close_layers() {
	if (window.parent.document.getElementById("calendarFrame")!=null) window.parent.document.getElementById("calendarFrame").style.display='none';

	if (window.parent.document.getElementById("depFrame")!=null) 
window.parent.document.getElementById("depFrame").style.display='none';

	if (window.parent.document.getElementById("airlineFrame")!=null) window.parent.document.getElementById("airlineFrame").style.display='none';
	
if (document.getElementById("HelpAirport")!=null) {
	MM_showHideLayers('HelpAirport','','hide');
	}
if (document.getElementById("HelpTime")!=null) {
	MM_showHideLayers('HelpTime','','hide');
	}
if (document.getElementById("HelpAirport")!=null) {
	MM_showHideLayers('HelpTime','','hide');
	}
if (document.getElementById("HelpDiretti")!=null) {
	MM_showHideLayers('HelpDiretti','','hide');
	}
if (document.getElementById("HelpAirline")!=null) {
	MM_showHideLayers('HelpAirline','','hide');
	}
if (document.getElementById("HelpClass")!=null) {
	MM_showHideLayers('HelpClass','','hide');
	}	
}

function SnapError(){
	var errorLayer;
	errorLayer = document.getElementById("error");
	
	
	if (document.getElementById("error")!=null) {
		P7_Snap('SnapIframe','error',9,9); 
		/*MM_showHideLayers('error','','show');*/
		document.getElementById("error").className 	= "errorClassOn";		
	}
}