function openChild(childUrl,childName,childWidth,childHeight,childStatus,childScrollbars,childLocation,childToolbar,childMenubar,childResizable) {
    var newChild = null;

    if (typeof(childResizable) == undefined) {childResizable = 1;}

    if (childWidth>0) {
        childPosLeft = Math.floor((screen.width - childWidth) / 2);
        childPosTop = Math.floor((screen.height - childHeight) / 2);
        newChild = window.open(childUrl,childName,'width='+childWidth+',height='+childHeight+',innerwidth='+childWidth+',innerheight='+ childHeight+',top='+childPosTop+',left='+childPosLeft+',status='+childStatus+',scrollbars='+childScrollbars+',location='+childLocation+',toolbar='+childToolbar+',menubar='+childMenubar+',resizable='+childResizable);
    } else {
        newChild = window.open(childUrl,childName);
    }
    if (newChild != null) newChild.window.focus();
}