IE = document.all ? 1 : 0 ;

var IE6 = false, IE7 = false,FIREFOX2 = false, FIREFOX = false,NETSCAPE7 = false, NETSCAPE = false,OPERA9 = false, OPERA = false,AUTRE = false;

var strChUserAgent = navigator.userAgent;
var intSplitStart = strChUserAgent.indexOf("(",0);
var intSplitEnd = strChUserAgent.indexOf(")",0);
var strChStart = strChUserAgent.substring(0,intSplitStart);
var strChMid = strChUserAgent.substring(intSplitStart, intSplitEnd);
var strChEnd = strChUserAgent.substring(strChEnd);

if(strChMid.indexOf("MSIE 7") != -1) { IE7 = true; IE=true; }
else if(strChMid.indexOf("MSIE 6") != -1) { IE6 = true; IE=true; }
else if(strChEnd.indexOf("Firefox/2") != -1)FIREFOX2 = true;
else if(strChEnd.indexOf("Firefox") != -1)FIREFOX = true;
else if(strChEnd.indexOf("Netscape/7") != -1)NETSCAPE7 = true;
else if(strChEnd.indexOf("Netscape") != -1)NETSCAPE = true;
else if(strChStart.indexOf("Opera/9") != -1)OPERA9 = true;
else if(strChStart.indexOf("Opera") != -1)OPERA = true;
else AUTRE = true;