function OpenWindow(id,name,width,height,style) {

        style=',scrolling=yes,resizable=yes,scrollbars=yes,status=yes,statusbar=yes'

        var Left = (screen.width  - width) / 2 ;
        var Top  = (screen.height - height) / 2 ;

        window[id]=window.open('',name,'width='+width+',height='+height+',left='+ Left +',top='+ Top +style);

        return false;
}