function popup(name,fin,width,height) { 
	var w=width; 
	var h=height; 
	var x=(screen.availWidth-w)/2; 
	var y=(screen.availHeight-h)/2; 
	var finestra=window.open(name,fin,'scrollbars=yes,resizable=yes,width='+w+',height='+h+',left='+x+',top='+y); 
} 

function randomString() {
}

function invia(){
	ff=document.getElementById('form_login');
	if (ff.username.value == '' || ff.password.value == '') {
		alert('I campi USERNAME e PASSWORD sono obbligatori.');
	} else {
		ff.submit();
	}
}

function check_date(date) {
   var pattern = new RegExp(/(0[1-9]|[12][0-9]|3[01])\/(0[1-9]|1[012])\/(19|20)\d\d/);
   if(date.match(pattern)) {
	   return false;
   } else {
      return true;
   }
}
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}