/******** funktion som kollar browserversion **********/
function browsercheck ()  {
this.browser=navigator.appName;
this.version=parseFloat(navigator.appVersion);
this.ns = (document.layers) ? 1:0; //Netscape
this.ie = (document.all) ? 1:0; //Explorer
this.ns4=(this.ns&&(this.version>=4)); //Netscape 4+
this.ie4=(this.ie&&(this.version>=4)); //Explorer 4+
}

check=new browsercheck();