function sayHello () {
	alert( 'hello world' );
}

function selectAll ( theField ) {
	// selects contents of theField
	theField.select();	
}

function isDom() {
	// returns whether agent supports DOM.
	var returnValue = false;
	if (!document.getElementById)
		{
  		returnValue = false;
  		} 
  	else 
  		{
  		returnValue = true;
  		}
  	return returnValue;
}

function toggleVisibility( targetId ){
	// toggles visibility of targetId
	if ( isDom () ) {
  		target = document.getElementById( targetId );
  		if (target.style.display == "none"){
  			target.style.display = "";
  		} else {
  			target.style.display = "none";
  		}
  	}
}

function noVisibility( targetId ){
	// sets visibility of targetId to none
	if ( isDom () ) {
  		target = document.getElementById( targetId );
  		target.style.display = "none";
  	}
}


// Copyright (c) 1996-1997 Athenia Associates.
// http://www.webreference.com/js/
// License is granted if and only if this entire
// copyright notice is included. By Tomer Shiran.

function setCookie (name, value, expires, path, domain, secure) {
    var curCookie = name + "=" + escape(value) + ((expires) ? "; expires=" + expires.toGMTString() : "") + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + ((secure) ? "; secure" : "");
    document.cookie = curCookie;
}

function getCookie (name) {
    var prefix = name + '=';
    var c = document.cookie;
    var nullstring = '';
    var cookieStartIndex = c.indexOf(prefix);
    if (cookieStartIndex == -1)
        return nullstring;
    var cookieEndIndex = c.indexOf(";", cookieStartIndex + prefix.length);
    if (cookieEndIndex == -1)
        cookieEndIndex = c.length;
    return unescape(c.substring(cookieStartIndex + prefix.length, cookieEndIndex));
}

function deleteCookie (name, path, domain) {
    if (getCookie(name))
        document.cookie = name + "=" + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + "; expires=Thu, 01-Jan-70 00:00:01 GMT";
}

function fixDate (date) {
    var base = new Date(0);
    var skew = base.getTime();
    if (skew > 0)
        date.setTime(date.getTime() - skew);
}

function rememberMe (f) {
    var now = new Date();
    fixDate(now);
    now.setTime(now.getTime() + 365 * 24 * 60 * 60 * 1000);
    setCookie('mtcmtauth', f.author.value, now, '', HOST, '');
    setCookie('mtcmtmail', f.email.value, now, '', HOST, '');
    setCookie('mtcmthome', f.url.value, now, '', HOST, '');
}

function forgetMe (f) {
    deleteCookie('mtcmtmail', '', HOST);
    deleteCookie('mtcmthome', '', HOST);
    deleteCookie('mtcmtauth', '', HOST);
    f.email.value = '';
    f.author.value = '';
    f.url.value = '';
}