function goster(gelen)
{
document.getElementById(gelen).style.visibility="visible";
document.getElementById(gelen).style.position="static";
}

function gizle(gelen)
{
document.getElementById(gelen).style.visibility="hidden";
document.getElementById(gelen).style.position="absolute";
}

function sozlesmeGoster(gelen)
{
document.getElementById(gelen).style.visibility="visible";
document.getElementById(gelen).style.position="relative";
}





function isValidEmail(email, required) 
{
    if (required==undefined) {   // if not specified, assume it's required
        required=true;
    }
    if (email==null) {
        if (required) {
            return false;
        }
        return true;
    }
    if (email.length==0) {  
        if (required) {
            return false;
        }
        return true;
    }
    if (! allValidChars(email)) {  // check to make sure all characters are valid
        return false;
    }
    if (email.indexOf("@") < 1) { //  must contain @, and it must not be the first character
        return false;
    } else if (email.lastIndexOf(".") <= email.indexOf("@")) {  // last dot must be after the @
        return false;
    } else if (email.indexOf("@") == email.length) {  // @ must not be the last character
        return false;
    } else if (email.indexOf("..") >=0) { // two periods in a row is not valid
	return false;
    } else if (email.indexOf(".") == email.length) {  // . must not be the last character
	return false;
    }
    return true;
}








function allValidChars(email) {
  var parsed = true;
  var validchars = "abcdefghijklmnopqrstuvwxyz0123456789@.-_";
  for (var i=0; i < email.length; i++) {
    var letter = email.charAt(i).toLowerCase();
    if (validchars.indexOf(letter) != -1)
      continue;
    parsed = false;
    break;
  }
  return parsed;
}











function isNumeric(sText)
{
   var ValidChars = "0123456789";
   var IsNumber = true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
   { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         IsNumber = false;
    }
   return IsNumber;   
}











function setColor(el)
{
	if (el.style) el.style.border = "2px solid #9E1B34"; 
}

function unsetColor(el)
{
	if (el.style) el.style.border = "1px solid #CACED0"; 
}












function sayii(f) {
var re = /^[0-9]*$/;
if (!re.test(f.value)) {
alert("Sadece rakam girebilirsiniz.");
f.value = f.value.replace(/[^0-9]/g,"");
}
}


function ilkHarf(frmObj) {
var index;
var tmpStr;
var tmpChar;
var preString;
var postString;
var strlen;
tmpStr = frmObj.value.toLowerCase();
strLen = tmpStr.length;
if (strLen > 0)  {
for (index = 0; index < strLen; index++)  {
if (index == 0)  {
tmpChar = tmpStr.substring(0,1).toUpperCase();
postString = tmpStr.substring(1,strLen);
tmpStr = tmpChar + postString;
}
else {
tmpChar = tmpStr.substring(index, index+1);
if (tmpChar == " " && index < (strLen-1))  {
tmpChar = tmpStr.substring(index+1, index+2).toUpperCase();
preString = tmpStr.substring(0, index+1);
postString = tmpStr.substring(index+2,strLen);
tmpStr = preString + tmpChar + postString;
         }
      }
   }
}
frmObj.value = tmpStr;
}



function ForumJump(URL) {
	
	if (URL.options[URL.selectedIndex].value != "") self.location.href = URL.options[URL.selectedIndex].value;	
	return true;
}


function uyari(text) {

if (confirm(text))
return true;
else 
return false;
}