function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}



function Toggle(item) {
   obj=document.getElementById(item);
   visible=(obj.style.display!="none")
   if (visible) {
     obj.style.display="none";
   } else {
      obj.style.display="block";
   }
}


function hashLoginPassword(doForm, cur_session_id)
{
	// Compatibility.
	if (cur_session_id == null)
		cur_session_id = smf_session_id;

	if (typeof(hex_sha1) == "undefined")
		return;
	// Are they using an email address?
	if (doForm.login.value.indexOf("@") != -1)
		return;

	// Unless the browser is Opera, the password will not save properly.
	if (typeof(window.opera) == "undefined")
		doForm.password.autocomplete = "off";

	doForm.hash_passwrd.value = hex_sha1(hex_sha1(doForm.login.value.php_to8bit().php_strtolower() + doForm.password.value.php_to8bit()) + cur_session_id);

	// It looks nicer to fill it with asterisks, but Firefox will try to save that.
	if (navigator.userAgent.indexOf("Firefox/") != -1)
		doForm.password.value = "";
	else
		doForm.password.value = doForm.password.value.replace(/./g, "*");
}