var arrayPointer = 0;
var imgBrandIDs = new Array();
var imgBrandSrcs = new Array();
var imgOverBrandSrcs = new Array();
var imgBrandsArray = new Array();

registerNewBrand('imgSatisMenu', '../images/buttons/btnSatis.jpg', '../images/buttons/btnSatis1.jpg');
registerNewBrand('imgAnaSayfaMenu', '../images/buttons/btnAna.jpg', '../images/buttons/btnAna1.jpg');
registerNewBrand('imgLeftArrow', '../images/buttons/leftArrow.gif', '../images/buttons/leftArrow1.gif');
registerNewBrand('imgRightArrow', '../images/buttons/rightArrow.gif', '../images/buttons/rightArrow1.gif');

function registerNewBrand(imgBrandID, imgBrandSrc, imgOverBrandSrc)
{
    imgBrandIDs[arrayPointer] = imgBrandID;
    imgBrandSrcs[arrayPointer] = imgBrandSrc;
    imgOverBrandSrcs[arrayPointer] = imgOverBrandSrc;
    preloadImage(arrayPointer);
    
    arrayPointer++;
}

function preloadImage(arrayIndex)
{
    var imgRef = new Image();
    imgRef.src = imgOverBrandSrcs[arrayIndex];
    imgBrandsArray[arrayIndex] = imgRef;
}
            
function brandsMouseMove(objImg)
{
    objImg.src = imgOverBrandSrcs[getObjIndex(objImg.id)];
}

function brandsMouseOut(objImg)
{
    objImg.src = imgBrandSrcs[getObjIndex(objImg.id)];
}

function brandsMouseMoveOpacity(objImg)
{
    objImg.style.filter = "alpha(opacity=100)";
    objImg.style.opacity = 1;
}

function brandsMouseOutOpacity(objImg)
{
    objImg.style.filter = "alpha(opacity=50)";
    objImg.style.opacity = 0.5;
}

function getObjIndex(ID)
{
    var objIndex;
    
    for(var i = 0; i < arrayPointer; i++)
    {
        if (imgBrandIDs[i] == ID)
        {
            objIndex = i;
            break;
        }
    }
    
    return objIndex;
}