function cgeInit() {
	var preloadDiv = document.getElementById("preloadImages");
	for (var i = 0; i<preloadImages.length;i++) {
		var preloadImage = preloadImages[i];
		var newImg = document.createElement("img");
		newImg.src = preloadImage;
		preloadDiv.appendChild(newImg);
	}
}

function cgeImageHover (imgFileName,objLink) {
	if(cgeCurrentImage != imgFileName)
		blendimage('firstArticleImageBlendDiv','firstArticleImage','/elements/products/groupPreview/'+imgFileName,750);
	cgeCurrentImage = imgFileName;
	for(var i = 0;i<document.links.length;i++) {
		lnk = document.links[i];
		for(var j=0;j<lnk.attributes.length;j++) {
			if(lnk.attributes[j].name == 'rel') 
				if(lnk.attributes[j].nodeValue=='imageHoverLink') lnk.style.color = '#666';		
		}		
	}
	objLink.style.color = '#a10b19';
}



// image-blending functions // 
// http://www.brainerror.net/scripts/javascript/blendtrans/
function opacity(id, opacStart, opacEnd, millisec) {
    //speed for each frame
    var speed = Math.round(millisec / 100);
    var timer = 0;

    //determine the direction for the blending, if start and end are the same nothing happens
    if(opacStart > opacEnd) {
        for(i = opacStart; i >= opacEnd; i--) {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    } else if(opacStart < opacEnd) {
        for(i = opacStart; i <= opacEnd; i++)
            {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    }
}

//change the opacity for different browsers
function changeOpac(opacity, id) {
    var object = document.getElementById(id).style;
    object.opacity = (opacity / 100);
    object.MozOpacity = (opacity / 100);
    object.KhtmlOpacity = (opacity / 100);
    object.filter = "alpha(opacity=" + opacity + ")";
} 

function shiftOpacity(id, millisec) {
    //if an element is invisible, make it visible, else make it ivisible
    if(document.getElementById(id).style.opacity == 0) {
        opacity(id, 0, 100, millisec);
    } else {
        opacity(id, 100, 0, millisec);
    }
} 

function blendimage(divid, imageid, imagefile, millisec) {
    var speed = Math.round(millisec / 100);
    var timer = 0;
    
    //set the current image as background
    document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
    
    //make image transparent
    changeOpac(0, imageid);
    
    //make new image
    document.getElementById(imageid).src = imagefile;

    //hide old background: 
    setTimeout(document.getElementById(divid).style.backgroundImage = "url(/elements/gfx/white.gif)",(100*speed));
    
    //fade in image
    for(i = 0; i <= 100; i++) {
        setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
        timer++;
    }
}