// -- browser detection ------------------------

var agt=navigator.userAgent.toLowerCase();
var is_major  = parseInt(navigator.appVersion);
var is_minor  = parseFloat(navigator.appVersion);

var is_nav    = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)&&(agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)&&(agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
var is_nav4   = (is_nav && (is_major == 4));
var is_nav6up = (is_nav && (is_major >= 5));

var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
var is_ie3    = (is_ie && (is_major < 4));
var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf("msie 4")!=-1) );
var is_ie5    = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
var is_ie5_5  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.5") !=-1));
var is_ie5up  = (is_ie && !is_ie3 && !is_ie4);
var is_ie6up  = (is_ie && !is_ie3 && !is_ie4 && !is_ie5 && !is_ie5_5);

var is_win    = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
var is_mac    = (agt.indexOf("mac")!=-1);

// -- css redirection --------------------------

if(is_ie5up||is_nav6up){document.write('<link rel=StyleSheet href="css_js/ie_ns6.css" type="text/css">')}else 
if(is_mac&&is_nav4){document.write('<link rel=StyleSheet href="css_js/mac_ns4.css" type="text/css">')}else
if(is_win&&is_nav4){document.write('<link rel=StyleSheet href="css_js/win_ns4.css" type="text/css">')}
else{document.write('<link rel=StyleSheet href="css_js/win_ie.css" type="text/css">')}

// -- flash detection --------------------------

var is_flash=0;
if(navigator.appName=="Microsoft Internet Explorer"&&navigator.appVersion.indexOf("Mac")!=-1){is_flash=0} 
var plugin=(navigator.mimeTypes&&navigator.mimeTypes["application/x-shockwave-flash"]?navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin:0);
if((navigator.appName=="Microsoft Internet Explorer"&&navigator.appVersion.indexOf("Mac")==-1&&navigator.appVersion.indexOf("3.1")==-1)||(plugin&&parseInt(plugin.description.substring(plugin.description.indexOf(".")-1))>=5)){is_flash=1}else{is_flash=0} 

// -- functions --------------------------------

function change(imgname, num) {document[imgname].src = img[num].src}

function pop(url,wdw,w,h,s) {
	if (s==1){w+=16}
	var winleft = (screen.width - w) / 2;
	var wintop = (screen.height - h) / 2;
	winPop = window.open(url, wdw, 'width='+w+',height='+h+',left='+winleft+',top='+wintop+',screenX=0,screenY=0,directories=0,location=0,menubar=0,scrollbars='+s+',status=0,toolbar=0,resizable=1');
	winPop.focus();
}

function dynref() {
	if ((document.getElementById('ref').innerHTML=='')||(document.getElementById('ref').innerHTML=='<br>')) {
		document.getElementById('ref').innerHTML=reftxt;
	} else {
		document.getElementById('ref').innerHTML='';
	}
}