function checkDate()
{
    if(event.keyCode == ".".charCodeAt(0) || 
	(event.keyCode <= "9".charCodeAt(0) && event.keyCode >= "0".charCodeAt(0))) 
	{ event.returnValue = true } else { event.returnValue = false }
}

function setjs() {
 if(navigator.product == 'Gecko') {
   document.loginform["interface"].value = 'mozilla';
 }else if(window.opera && document.childNodes) {
   document.loginform["interface"].value = 'opera7';
 }else if(navigator.appName == 'Microsoft Internet Explorer') {
   document.loginform["interface"].value = 'ie';
 }else if(navigator.appName == 'Konqueror') {
    document.loginform["interface"].value = 'konqueror';
 }else if(window.opera) {
   document.loginform["interface"].value = 'opera';
 }
}

function nickvalid() {
   var nick = document.loginform.Nickname.value;
   if(nick.match(/^[A-Za-z0-9\[\]\{\}^\\\|\_\-`]{1,32}$/))
      return true;
   alert('Введите пожалуйста ник латинскими буквами!');
   return false;
}

function setcharset() {
    if(document.charset && document.loginform["Character set"])
	document.loginform['Character set'].value = document.charset
}