if (document.layers) {
    loadingLayer = document.loading;
    browseWidth=window.outerWidth;
    browseHeight=window.outerHeight;
} else if (document.getElementById) {
    loadingLayer = document.getElementById("loading").style;
    browseWidth=document.body.clientWidth;
    browseHeight=document.body.clientHeight;
} else if (document.all) {
    loadingLayer = loading.style;
    browseWidth=document.body.clientWidth;
    browseHeight=document.body.clientHeight;
}

if (browseWidth > 770) {
    browseWidth = 770;
}
loadingLayer.left = Math.round((browseWidth/2)-200);




function showLoading() {
    if (document.documentElement && document.documentElement.scrollTop) {
        scrollTop = document.documentElement.scrollTop;
    } else if (document.body) {
        scrollTop = document.body.scrollTop
    } else {
        scrollTop = window.pageYOffset;
    } 
  
    loadingLayer.top = Math.round( ( browseHeight / 2 ) - 12 + scrollTop );
    loadingLayer.visibility = "visible";
}

function hideLoading() {
    loadingLayer.visibility = "hidden";
}