function BrowserCheck() {
	var b = navigator.appName;
	if (b=="Netscape") this.b = "nc"
	else if (b=="Microsoft Internet Explorer") this.b = "ie"
	else this.b = b
	this.v = parseInt(navigator.appVersion);
	this.nc = (this.b=="nc" && this.v>=4);
	this.nc4 = (this.b=="nc" && this.v==4);
	this.nc5 = (this.b=="nc" && this.v==5);
	this.ie = (this.b=="ie" && this.v>=4);
	this.ie4 = (navigator.userAgent.indexOf('MSIE 4')>0);
	this.ie5 = (navigator.userAgent.indexOf('MSIE 5')>0);
	if (this.ie5) this.v = 5
	this.min = (this.ns||this.ie);
}
is = new BrowserCheck();