function BrowserCheck() {

	var b = navigator.appName
	if (b=="Netscape") this.b = "ns"
	else if (b=="Microsoft Internet Explorer") this.b = "ie"
	else this.b = b
	this.version = navigator.appVersion
	this.v = parseInt(this.version)
	
	this.ns = (this.b=="ns" && this.v>=4 && this.v!=5)
	this.ns4 = (this.b=="ns" && this.v==4)
	this.ns6 = (this.b=="ns" && this.v==5)
	this.ie = (this.b=="ie" && this.v>=4)
	this.ie4 = (this.version.indexOf('MSIE 4')>0)
	this.ie5 = (this.version.indexOf('MSIE 5')>0)
	this.minimum = (this.ns||this.ie)
	this.old = (((this.b=="ns") || (this.b=="ie")) && (this.v<4))
}
is = new BrowserCheck();