var browser=new browsercheck();

function browsercheck(){
	this.ver=navigator.appVersion; 
	this.agent=navigator.userAgent;
	this.dom=document.getElementById?1:0;
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;
	this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom)?1:0;
	this.ie4=(document.all && !this.dom)?1:0;
	this.ie=this.ie4||this.ie5||this.ie6;
	this.mac=this.agent.indexOf("Mac")>-1;
//	this.opera5=this.agent.indexOf("Opera 5")>-1;
	this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
	this.ns4=(document.layers && !this.dom)?1:0;
	this.ns=this.ns4||this.ns6;
	return this;
}

if (browser.mac && browser.ie) {
	resolution = screen.width;
} else {
	resolution = screen.availWidth;
	}