// <!---
//client management
function Is ()
{   
 var agt=navigator.userAgent.toLowerCase();

 this.major = parseInt(navigator.appVersion);
 this.ie   = (agt.indexOf('msie')!=-1);
 this.ie3    = (this.ie && (this.major < 4));
 this.ie4    = (this.ie && (this.major == 4) && (agt.indexOf("msie 4")!=-1) );
 this.ie5    = (this.ie && (this.major == 4) && (agt.indexOf("msie 5.0")!=-1) );
 this.ie5up  = (this.ie  && !this.ie3 && !this.ie4);
 this.ie5_5up =(this.ie && !this.ie3 && !this.ie4 && !this.ie5);
 this.mozilla = (agt.indexOf('mozilla')!=-1 && (this.major > 4));
}

var is = new Is();
// -->