function getOS(){
	this.os = navigator.userAgent.toLowerCase();
	this.mac = (( this.os.indexOf( "ppc" ) !=-1 ) || (this.os.indexOf( "powerpc" ) !=-1 )) ? 1 : 0;
return}
os=new getOS();
function getbw(){
	this.mvn=navigator.appVersion;
	this.svn=parseFloat(this.mvn);
	this.dom=document.getElementById ? 1 : 0;
	this.ie7=( this.dom && this.mvn.indexOf("MSIE") !=-1) ? 1 : 0;
	this.ie6=( this.dom && this.mvn.indexOf("MSIE 6") !=-1) ? 1 : 0;
	this.ie5=( this.dom && this.mvn.indexOf("MSIE 5") !=-1) ? 1 : 0;
	this.ie4=(!this.dom && document.all) ? 1 : 0;
	this.ns6=( this.dom && parseInt(this.mvn) >= 5) ? 1 : 0;
	this.ns4=(!this.dom && document.layers && (this.svn > 4.05)) ? 1 : 0;
return}