function isNumberKey(evt)
    {
     var charCode = (evt.which) ? evt.which : event.keyCode
     if (charCode > 31 && (charCode < 48 || charCode > 57))
        return false;

     return true;
    }
    
function img_popup(imgurl) {
            if (imgurl == '') return;
            var popupcounter = -1;
            if ($("#simplemodal-container",window.parent.document).length == 0) {
                $.modal('<div style="width:640px;height:480px;text-align:center;background: url(immagini/loading.gif) no-repeat center center;"><img src="viewThumb.php?URL=' + imgurl + '&VIEW=popup_dettaglio" style="border:0;" /></div><div style="clear:both"></div><div style="height:15px;"><p style="cursor:pointer;margin:0;padding-bottom:8px;line-height:22px;text-align:center;font-size:11px;padding-left:15px;"><span style="font-size:13px;" onclick="changepopup(\'prev\');">&lt; Precedente</span> - <span style="font-size:13px;" onclick="changepopup(\'next\');">Successiva &gt;</span></div>', {
                        closeHTML:'<div style="font-size:12px;cursor:pointer;">Chiudi</div>',
                        containerCss:{
                                backgroundColor:"#fff",
                                borderColor:"#fff",
                                padding:0,
                                width:640,
                                height:530
                        },
                        overlayClose:true
                });
            }
            return false;

}