//browswer check function determines client browser and os
//-------------------------------------------------------------------------------
function bwCheck(){
	this.agent = navigator.userAgent;
	this.ver = navigator.appVersion;
	this.dom = document.getElementById?1:0;
	this.op5 = ( this.agent.indexOf("Opera 5")>-1||this.agent.indexOf("Opera/5")>-1)?1:0
	this.op6=( this.agent.indexOf("Opera 6")>-1 || this.agent.indexOf("Opera/6") >-1)?1:0  
	this.op7=( this.agent.indexOf("Opera 7.0")>-1||this.agent.indexOf("Opera/7.0")>-1)?1:0
	this.opera=(this.op5||this.op6||this.op7)
	this.ie4=(document.all && !this.dom && !this.opera)?1:0;
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera)?1:0; 
	this.ie55=(this.ver.indexOf("MSIE 5.5")>-1&&this.dom&&!this.opera)?1:0;
	this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
	this.ie=this.ie4||this.ie5||this.ie6
	this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
	this.ns4=(document.layers && !this.dom)?1:0;
	this.ns=(this.ns4||this.ns6)
	this.mac=this.agent.indexOf("Mac")>-1
	this.windows=this.agent.indexOf("Windows")>-1
	this.old =(!this.dom && !this.ie4 && !this.ns4 && !this.opera)?1:0;
	this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera)
	return this
}

var bw = new bwCheck();