var marqueePos = -1;
var timeout = null;
var is_visible = true;
var marqueeText = [
	"Success is not measured by the final outcome, but one's journey along the way.",
	"Behold the turtle. He makes progress only when he sticks his neck out.",
	"Hard to believe: 4 years to prepare for the rest of your life. Will you be ready?",
	"The greatest failure is the failure to try.",
	"Need help with math? Just click here on <a href= http://www.webmath.com/ target=_blank>Math Help</a>.",
	"Most people get ahead during the time that others waste.",
	"I am not discouraged, because every wrong attempt discarded is another step forward.",
	"Reach high, for stars lie hidden in your soul. Dream deep, for every dream precedes the goal.",
	"Following the path of least resistance is what makes rivers and men crooked.",
	"True courage is not the absence of fear—but the willingness to proceed in spite of it.",
	"If you find a path with no obstacles, it probably doesn’t go anywhere.",
	"Yesterday is done. Tomorrow is uncertain. Right now is your gift to make a change.",
	"A certain amount of opposition is great help to a person. Kites rise against, not with the wind." ];

function changeMarqueeText ()
{
	document.getElementById ( "marquee" ).innerHTML = marqueeText [ marqueePos ];
}

function setMarqueeOpacityForAllBrowsers ( alpha ) {
	document.getElementById ( "marquee" ).style.filter = "progid:DXImageTransform.Microsoft.Alpha(style=0,opacity:" + alpha + ")";	// MSIE
	document.getElementById ( "marquee" ).style.KHTMLOpacity = alpha / 100;	// Safari < 1.2, Konqueror
	document.getElementById ( "marquee" ).style.MozOpacity = alpha / 100;	// Older Mozilla & Firefox
	document.getElementById ( "marquee" ).style.opacity = alpha / 100;	// Safari 1.2+, newer Mozilla & Firefox, CSS3
}

function affectMarquee ( currentAlpha, increment, cbFuncName ) {

	var alpha = currentAlpha + increment;

	// have we gone beyond either threshold?
	if ( alpha < 0 || alpha > 95 )	// use 95 so code jumps from 95 -> 99; Mozilla flickers the div if 95 -> 100
	{
		// if so, cancel the operation by invoking callback
		if ( cbFuncName != null )
			cbFuncName ();
	} else {
		// else, adjust transparency and setup the next adjustment
		setMarqueeOpacityForAllBrowsers ( alpha );
		setTimeout ( "affectMarquee ( " + alpha + ", " + increment + ", " + cbFuncName + " )", 25 );
	}
}


function marqueeDisappear ()
{
	affectMarquee ( 100, -5, "marqueeDisappearCallback" );
}

function marqueeAppear ()
{
	affectMarquee ( 0, 5, "marqueeAppearCallback" );
}

function marqueeDisappearCallback ()
{
	is_visible = false;
	marqueeForward ();
	marqueeAppear ();
}

function marqueeAppearCallback ()
{
	is_visible = true;
	setMarqueeOpacityForAllBrowsers ( 99 );
	timeout = setTimeout ( "marqueeDisappear ()", 10000 );
}

function marqueeForward ()
{
	if ( timeout != null ) clearTimeout ( timeout ); // cancel the pending fade out
	marqueePos++;
	if ( marqueePos >= marqueeText.length ) marqueePos = 0;
	changeMarqueeText ();

	if ( is_visible )
		timeout = setTimeout ( "marqueeDisappear ()", 10000 ); // reschedule the fade out in another 10 s
}

function marqueeBackward ()
{
	if ( timeout != null ) clearTimeout ( timeout ); // cancel the pending fade out
	marqueePos--;
	if ( marqueePos < 0 ) marqueePos = marqueeText.length - 1;
	changeMarqueeText ();

	if ( is_visible )
		timeout = setTimeout ( "marqueeDisappear ()", 10000 ); // reschedule the fade out in another 10 s
}

function startMarquee ()
{
	marqueeDisappear ();
}