function validURL(value) {
  var urlregex = new RegExp(
        "^(http:\/\/|https:\/\/|ftp:\/\/|www.){1}([0-9A-Za-z]+\.)");
  if(urlregex.test(value))
  {
    /* ping site, should really just use ajax HEAD request
    $.get(value, function(dat, stat) {
	  if(stat != "success")
		return false;
    });*/
    return true;
  }
  return false;
}

//Integer check-function
function isInt(n){
  var reInt = new RegExp(/^-?\d+$/);
  if (!reInt.test(n)) {
    return false;
  }
  return true;
}