// SET THIS VARIABLE FOR DELAY, 1000 = 1 SECOND
var delayLength = 8000;
	
function doMove(panelWidth, tooFar) {
    var leftValue = $("#mover").css("left");
    
    // Fix for IE
    if (leftValue == "auto") { leftValue = 0; };
    
    var movement = parseFloat(leftValue, 10) - panelWidth;
    
    if (movement == tooFar) {
	$("#mover").animate({
	    "left": 0
	});
    }
    else {
	$("#mover").animate({
	    "left": movement
	});
    }
}

$(function(){
	
    var $slide1 = $("#slide-1");

    var panelWidth = $slide1.css("width");
    var panelPaddingLeft = $slide1.css("paddingLeft");
    var panelPaddingRight = $slide1.css("paddingRight");
    
    panelWidth = parseFloat(panelWidth, 10);
    panelPaddingLeft = parseFloat(panelPaddingLeft, 10);
    panelPaddingRight = parseFloat(panelPaddingRight, 10);
    
    panelWidth = panelWidth + panelPaddingLeft + panelPaddingRight;
    
    var numPanels = $(".slide").length;
    var tooFar = -(panelWidth * numPanels);
    var totalMoverwidth = numPanels * panelWidth;
    $("#mover").css("width", totalMoverwidth);
    
    $("#slider").append('<a href="#" id="slider-stopper">Stop</a>');
    
    sliderIntervalID = setInterval(function(){
	doMove(panelWidth, tooFar);
    }, delayLength);
    
    $("#slider-stopper").click(function(){
	if ($(this).text() == "Stop") {
	    clearInterval(sliderIntervalID);
	    $(this).text("Start");
	}
	else {
	    sliderIntervalID = setInterval(function(){
		doMove(panelWidth, tooFar);
	    }, delayLength);
	    $(this).text("Stop");
	}
	
    });

});