Corbiz.prototype.centerImageInDiv = function (className) {
    if ( className === undefined ) className = 'centerimage';

    var divs = this.getElementsByClassName(document,className,'div');

    for ( var c = 0; c  < divs.length; c++ ) {

        var img = divs[c].getElementsByTagName("img").item(0);
            img.style.position = "absolute";
            img.style.top = Math.round( (divs[c].offsetHeight - img.offsetHeight) / 2) + "px";
            img.style.left = Math.round( (divs[c].offsetWidth - img.offsetWidth) / 2) + "px";

        divs[c].style.visibility = "visible";

    }//for
}//centerImageInDiv