/*common javascript functions*/

/*to create popups */
function poppa(pagina,dove,opzioni) {
window.open(pagina, dove, opzioni)
window.opener=self
}

/*go to a defined url or go 1 page back*/
function gotourl(url) {
	if(url == undefined)
	{
		alert("back");
history.back();
	} else {
		location.href = url;
	}
}

/*after defined milliseconds goto an url*/
function timergo(url,msecs){
	if(msecs == undefined) { msecs = 5000; }
	setTimeout("gotourl('" + url + "')", msecs);
}

function IsNumeric(strString)
   {
   var strValidChars = "0123456789.-";
   var strChar;
   var retval = true;

   if (strString.length == 0) return false;
   for (i = 0; i < strString.length && retval == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         retval = false;
         }
      }
   return retval;
  }



function check_mail(email)
{
	var mailregexp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/; 
	if (mailregexp.test(email) || (email == "") || (email == "undefined"))
	{
 		 return true;
	} else {
	return false;
	}
}

//checks/unchecks all the elements in a form
function CheckAll(form, mychecked)
{
	mychecked = ( mychecked == true ) ? true : false;
for (var i = 0; i < form.elements.length; i++)
	{

		var e = form.elements[i];
		e.checked = mychecked;
	}
}