function Is() {
    var agent = navigator.userAgent.toLowerCase();
    this.major = parseInt(navigator.appVersion);
    this.minor = parseFloat(navigator.appVersion);
    this.ns  = ((agent.indexOf('mozilla')!=-1) && ((agent.indexOf('spoofer')==-1) && (agent.indexOf('compatible') == -1)));
    this.ns2 = (this.ns && (this.major == 3));
    this.ns3 = (this.ns && (this.major == 3));
    this.ns4 = (this.ns && (this.major >= 4));
    this.ns406 = (this.ns && (this.minor == 4.06));
    this.ns407 = (this.ns && (this.minor == 4.07));
    this.ns408 = (this.ns && (this.minor == 4.08));
    this.ns45 = (this.ns && (this.minor == 4.5));
    this.ie   = (agent.indexOf("msie") != -1);
    this.ie3  = (this.ie && (this.major == 2));
    this.ie4  = (this.ie && (this.major >= 4));
    this.op3 = (agent.indexOf("opera") != -1);
}

var is = new Is();
var cartoonWindow = null;

function openWin(indirizzo, lar, alt ) {
  //  alert(indirizzo)
    
    if(is.ns4 || is.ie4) {
            var window_width = lar ;
            var window_height = alt;
        var window_top = 100;
        var window_left = 200;
        
        ivoWindow = window.open(indirizzo,'cancella','resizable=yes,status=yes,width='+window_width+',height='+window_height+',top='+window_top +',left='+ window_left+'');
    }
}
// -->