function showHide(target) {
   if (document.getElementById) {
   target = document.getElementById(target);
   }
   target.style.display = target.style.display == "none" ? "" : "none";
   makesomefog();
}

function makesomefog() {

if (navigator.appName == "Netscape" || navigator.appName == "Mozilla" || navigator.appName == "Firefox") {
document.getElementById('fog').style.height = document.height;
}

if (navigator.appName == "Opera") {
document.getElementById('fog').style.height = document.body.style.pixelHeight;
}

if (navigator.appName == "Microsoft Internet Explorer") {
document.getElementById('fog').style.height = document.body.scrollHeight;
}

}


function NumOnly()
{
    if ((event.keyCode != 8) && (event.keyCode != 9) && (event.keyCode != 13) && (event.keyCode < 35)
         || (event.keyCode > 40) && (event.keyCode < 45)
         || (event.keyCode == 47)
         || (event.keyCode > 58) && (event.keyCode < 96 )
         || (event.keyCode > 105) && (event.keyCode != 144))
        event.returnValue = false;
    return true;
}

function Check_Length()
{
          text = document.buryform.deathnote.value;
          text_num = text.length;
          maxtext_num = 1000;//максимальное кол-во символов в сообщении
          if (text_num >= maxtext_num ){
              document.buryform.deathnote.value = text.substring(0,1000);
          }
}

function Check_commentLength()
{
          text = document.commentform.comment.value;
          text_num = text.length;
          maxtext_num = 500;//максимальное кол-во символов в сообщении
          if (text_num >= maxtext_num ){
              document.commentform.comment.value = text.substring(0,500);
          }
}

function checkEmailFormat(sEmail)
{
    sEmail = sEmail.replace( new RegExp('/\(.*?\)/'), '' );
    var oRegExp = /^[A-Za-z0-9][-\w]*(\.[A-Za-z0-9][-\w]*)*@[A-Za-z0-9][-\w]*(\.[A-Za-z0-9][-\w]*)*\.[a-zA-Z]{2,4}$/;
    return oRegExp.test(sEmail);
}

function isEmpty(str)
{
    if (str.value.replace(/ +/,"").length == 0)
                return true;
    return false;
}

function checkInfo()
{
        var p = eval("document.buryform");
        //document.getElementById('clip').value=window.clipboardData.getData('Text');
        p.subbut.disabled=true;
        document.getElementById('fog').style.display="";
        if (p.name.value.length == 0 || p.name.value == " ") {
            alert("Вы не ввели имя!");
                p.name.focus();
                p.subbut.disabled=false;
                document.getElementById('fog').style.display="none";
                return false;
        }
        if (p.deathnote.value.length == 0 || p.deathnote.value == " ") {
            alert("Вы не написали завещание!");
                p.deathnote.focus();
                p.subbut.disabled=false;
                document.getElementById('fog').style.display="none";
                return false;
        }
}

function checkComment()
{
    var p = eval("document.commentform");
    //document.getElementById('clip').value=window.clipboardData.getData('Text');
    p.subbut.disabled=true;
    document.getElementById('fog').style.display="";
        if (p.author.value.length == 0 || p.author.value == " ") {
            alert("Вы не ввели имя!");
                p.author.focus();
                p.subbut.disabled=false;
                document.getElementById('fog').style.display="none";
                return false;
        }
        if (p.comment.value.length == 0 || p.comment.value == " ") {
            alert("Вы ничего не написали!");
                p.comment.focus();
                p.subbut.disabled=false;
                document.getElementById('fog').style.display="none";
                return false;
        }
}

function checkEditPass()
{
    var p = eval("document.editpassform");
    document.getElementById('fog').style.display="";
        if (p.pw.value.length == 0 || p.name.value == " ") {
            alert("Вы не ввели пароль!");
                p.pw.focus();
                document.getElementById('fog').style.display="none";
                return false;
        }
}