var agt=navigator.userAgent.toLowerCase();
/**/
var is_major = parseInt(navigator.appVersion);
var is_minor = parseFloat(navigator.appVersion);
/**/
var is_nav  = ((agt.indexOf('mozilla')!=-1));
var is_nav2 = (is_nav && (is_major == 2));
var is_nav3 = (is_nav && (is_major == 3));
var is_nav4 = (is_nav && (is_major == 4));  
var is_nav4up = (is_nav && (is_major >= 4));
var is_nav5 = (is_nav && (is_major == 5));
var is_nav5up = (is_nav && (is_major >= 5));
/**/
var is_ie   = (agt.indexOf("msie") != -1);
var is_ie3  = (is_ie && (is_major < 4));
var is_ie4  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")==-1) );
var is_ie4up  = (is_ie  && (is_major >= 4));
var is_ie5  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
var is_ie5up  = (is_ie  && !is_ie3 && !is_ie4);
/**/
var is_aol   = (agt.indexOf("aol") != -1);
var is_aol3  = (is_aol && is_ie3);
var is_aol4  = (is_aol && is_ie4);
var is_opera = (agt.indexOf("opera") != -1);
var is_webtv = (agt.indexOf("webtv") != -1);
/**/
var is_win   = ( (agt.indexOf("win")!=-1));
var is_mac    = (agt.indexOf("mac")!=-1);
/**/
var isMenu = ((is_ie4up && !is_mac) || (is_nav4up && is_minor>4.05));
NS4 = (document.layers);
IE4 = (document.all);
ver4 = (NS4 || IE4);   
isMac = (navigator.appVersion.indexOf("Mac") != -1);
/**/
function popUp(){return};
function popDown(){return};
function startIt(){return}
if (!ver4) event = null;