var imageObjects = Array();
var imageDescs = Array();
var offset = 0;
var interval = 2000;
var autoslide = false;
var is_ie;
var timer_id = 0;
function d(o) {
    return document.getElementById(o);
}

function imageElem() {
    return d("slider_Picture");
}

function descElem() {
    return d("desc");
}

function AutoSlideOnOff() {
    if (autoslide) {
        autoslide = false;
        clearInterval(timer_id);
    }
    else {
        autoslide = true;
        timer_id = setInterval(AutoSlide, interval);
    }
}

function AutoSlide() {
    if (offset == imageObjects.length - 1)
        offset = -1;
    Next();
}

function InitXSlide() {
    imageElem().src = imageObjects[0];
    descElem().innerHTML = "  " + imageDescs[0];
    is_ie = (window.navigator.userAgent.indexOf('Firefox')==-1) ? true : false;
    if (!is_ie) {
        descElem().setAttribute("class", "MessageFirefox");
    }

    if (is_ie && window.navigator.userAgent.indexOf("MSIE 6.0") != -1){
    	d("leftButtonSlider").setAttribute("src","images/0.gif");
	d("leftButtonSlider").style.cssText = "filter: progid:DXImageTransform.Microsoft.AlphaImageLoader (src=\'left.png\')";
	
	d("rightButtonSlider").setAttribute("src","images/0.gif");
	d("rightButtonSlider").style.cssText = "filter: progid:DXImageTransform.Microsoft.AlphaImageLoader (src=\'right.png\')";
	
    }

    if (autoslide) {
        timer_id = setInterval(AutoSlide, interval);
    }
    
}
function Previous() {
    if (offset) {
        offset--;
        imageElem().src = imageObjects[offset];
        descElem().innerHTML = "  " + imageDescs[offset];
    }
}

function Next() {
    if (offset != imageObjects.length-1) {
        offset++;
        imageElem().src = imageObjects[offset];
        descElem().innerHTML = "  " + imageDescs[offset];
    }
}