function clearText(thefield){
	if (thefield.defaultValue==thefield.value)
	thefield.value = ""
}
function readCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for (var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) == ' ') c = c.substring(1, c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
    }
    return null;
}

function createCookie(name, value, days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        var expires = "; expires=" + date.toGMTString();
    }
    else var expires = "";
    document.cookie = name + "=" + value + expires + "; path=/";
}

function eraseCookie(name) {
    createCookie(name, "", -1);
}

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 isInt(str) {
    var i = parseInt(str);

    if (isNaN(i))
        return false;

    i = i.toString();
    if (i != str)
        return false;

    return true;
}
function SetOpacity(object, opacityPct) {
    // IE.
    object.style.filter = 'alpha(opacity=' + opacityPct + ')';
    // Old mozilla and firefox
    object.style.MozOpacity = opacityPct / 100;
    // Everything else.
    object.style.opacity = opacityPct / 100;
}
function ChangeOpacity(id, msDuration, msStart, fromO, toO, minopac) {
    var element = document.getElementById(id);
    var opacity = element.style.opacity * 100;
    var msNow = (new Date()).getTime();
    opacity = fromO + (toO - fromO) * (msNow - msStart) / msDuration;
    if (opacity < minopac)
        SetOpacity(element, minopac)
    else if (opacity > 100)
        SetOpacity(element, 100)
    else {
        SetOpacity(element, opacity);
        element.timer = window.setTimeout("ChangeOpacity('" + id + "'," + msDuration + "," + msStart + "," + fromO + "," + toO + "," + minopac + ")", 1);
    }
}
function FadeIn(id, minopac) {

    var element = document.getElementById(id);
    if (element.timer) window.clearTimeout(element.timer);
    var startMS = (new Date()).getTime();
    element.timer = window.setTimeout("ChangeOpacity('" + id + "',200," + startMS + ",0,100," + minopac + ")", 1);
}
function FadeOut(id, minopac) {
    var element = document.getElementById(id);
    if (element.timer) window.clearTimeout(element.timer);
    var startMS = (new Date()).getTime();
    element.timer = window.setTimeout("ChangeOpacity('" + id + "',200," + startMS + ",100,0," + minopac + ")", 1);
}