function BrowserCheck() {

	var b = navigator.appName
	var p = navigator.platform
	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.vFloat = parseFloat(this.version);
	
	//alert(this.v + ", " + this.b + ", " + this.p);
	//alert(this.vFloat);
	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.ie6 = (this.version.indexOf('MSIE 6')>0)
	//this.minimum = (this.ns||this.ie)
	//this.nonMin = false;
	//this.old = (((this.b=="ns") || (this.b=="ie")) && (this.v<4))
	this.minimum = false;
	
	if(p.indexOf("Mac")!=-1){
		this.windows = false;
		this.mac = true;
	}
	else{
		this.windows = true;
		this.mac = false;
	}
	
	if(this.ie && !this.ie4 && this.windows){
	  this.minimum = true;
	}
	else if(this.ns6 && (this.vFloat >= 5.2)){
	  this.minimum = true;
	}
	
}
is = new BrowserCheck();