<!-- 
function Is() {
    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) &&
		 (agent.indexOf('opera') == -1) &&
		 (agent.indexOf('webtv') == -1));	
    this.ns2   = (this.ns && (this.major      ==    3));
    this.ns3   = (this.ns && (this.major      ==    3));
    this.ns4   = (this.ns && (this.major      ==    4));
    this.ns6   = (this.ns && (this.major      >=    5));
    this.ie    = (agent.indexOf("msie")       !=   -1);
    this.ie3   = (this.ie && (this.major      < 4));
    this.ie4   = (this.ie && (this.major      ==    4) && (agent.indexOf("msie 5.0")   ==   -1));
    this.ie5   = (this.ie && (this.major      ==    4) && (agent.indexOf("msie 5.0")   !=   -1));
	this.ieX = (this.ie && !this.ie3 && !this.ie4); 
}

var is = new Is();