var curAtcl = 0;
var EFFECT_NONE = 0;
var EFFECT_FADEIN_FADEOUT = 1;
var EFFECT_CROSSFADE = 2;

function SwitchArticle()
{
    var curDiv = document.getElementById("pos" + curAtcl);
    if (curAtcl == atclUBound)
    {
        curAtcl = 0;
    }
    else
    {
        curAtcl++;
    }
    var newDiv = document.getElementById("pos" + curAtcl);
    switch (switchEffect)
    {
        case EFFECT_NONE:
            SwitchNoEffect(curDiv, newDiv);
            break;

        case EFFECT_FADEIN_FADEOUT:
            SwitchFadeInFadeOut(curDiv, newDiv);
            break;

        case EFFECT_CROSSFADE:
            //alert(curDiv.id + ", " + newDiv.id);

            SwitchCrossfade(curDiv, newDiv);
            break;
    }

    window.setTimeout("SwitchArticle()", (switchDelay) * 1000);

}

function StartSwitchTimer(delay) 
{
    window.setTimeout("SwitchArticle()", (delay + switchDelay) * 1000);
}


function SwitchNoEffect(curDiv, newDiv)
{
    curDiv.style.display = "none";
    newDiv.style.display = "block";
}


function SwitchFadeInFadeOut(curDiv, newDiv) 
{
    $("#" + curDiv.id).fadeOut(switchSpeed * 1000, function() { SwitchFadeIn(newDiv) });
}

function SwitchFadeIn(newDiv)
{
    $("#" + newDiv.id).fadeIn(switchSpeed * 1000);
}

function SwitchCrossfade(curDiv, newDiv) 
{
    $("#" + curDiv.id).fadeOut(switchSpeed * 1000);
    $("#" + newDiv.id).fadeIn(switchSpeed * 1000);
}