// -----------------------------------------------------------------------------
// Browser identification
// -----------------------------------------------------------------------------
var agt=navigator.userAgent.toLowerCase();
var appVer = navigator.appVersion.toLowerCase();
var is_minor = parseFloat(appVer);
var is_major = parseInt(is_minor);

// Note: On IE, start of appVersion return 3 or 4
// which supposedly is the version of Netscape it is compatible with.
// So we look for the real version further on in the string
var iePos  = appVer.indexOf('msie');
if (iePos !=-1) {
    is_minor = parseFloat(appVer.substring(iePos+5,appVer.indexOf(';',iePos)))
    is_major = parseInt(is_minor);
}

// Netscape6 is mozilla/5 + Netscape6/6.0!!!
// Mozilla/5.0 (Windows; U; Win98; en-US; m18) Gecko/20001108 Netscape6/6.0
var nav6Pos = agt.indexOf('netscape6');
if (nav6Pos !=-1) {
    is_minor = parseFloat(agt.substring(nav6Pos+10))
    is_major = parseInt(is_minor)
}
var is_getElementById   = (document.getElementById) ? "true" : "false"; // 001121-abk
var is_getElementsByTagName = (document.getElementsByTagName) ? "true" : "false"; // 001127-abk
var is_documentElement = (document.documentElement) ? "true" : "false"; // 001121-abk
var is_opera = (agt.indexOf("opera") != -1);
var is_opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1);
var is_opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1);
var is_opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1);
var is_opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
var is_opera6 = (agt.indexOf("opera 6") != -1 || agt.indexOf("opera/6") != -1); // new 020128- abk
var is_opera7 = (agt.indexOf("opera 7") != -1 || agt.indexOf("opera/7") != -1); // new 021205- dmr
var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);
var is_opera6up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5); // new020128
var is_opera7up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5 && !is_opera6); // new021205 -- dmr

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_nav4up = (is_nav && is_minor >= 4);  // changed to is_minor for consistency - dmr, 011001
var is_nav5   = (is_nav && is_major == 5 && !is_nav6); // checked for ns6
var is_navonly = (is_nav && ((agt.indexOf(";nav") != -1) || (agt.indexOf("; nav") != -1)) );
var is_nav6   = (is_nav && is_major==6);    // new 010118 mhp
var is_nav6up = (is_nav && is_minor >= 6) // new 010118 mhp
var is_ie   = ((iePos!=-1) && (!is_opera));
var is_gecko = (agt.indexOf('gecko') != -1);

var is_ie3  = (is_ie && (is_major < 4));
var is_ie4   = (is_ie && is_major == 4);
var is_ie4up = (is_ie && is_minor >= 4);
var is_ie5_5  = (is_ie && (agt.indexOf("msie 5.5") !=-1)); // 020128 new - abk
var is_ie5_5up =(is_ie && is_minor >= 5.5);                // 020128 new - abk
	
//alert("is_ie4up is "  + is_ie4up );
//alert("is_nav6up is "  + is_nav6up );
//alert("is_nav4 is "  + is_nav4 );

var layerefA;
var LayerefB;
var LayerefC;

if (is_ie4up) {
	//alert("browser is IE4up");
	layerefA = "document.all['";
	layerefB = "'].style";
	layerefC = "']";
} else if (is_opera5up) {
	layerefA = "document.all['";
	layerefB = "'].style";
	layerefC = "']";
} else if (is_nav6up) {
	//alert("browser is nav6up");
	layerefA = "document.getElementById('";
	layerefB = "').style";
	layerefC = "')";
} else if (is_gecko) {
	//alert("browser is mozilla");
	layerefA = "document.getElementById('";
	layerefB = "').style";
	layerefC = "')";
} else if (is_nav5) {
	//alert("browser is nav5");
	layerefA = "document.getElementById('";
	layerefB = "').style";
	layerefC = "')";
} else {
	//alert("browser is unknown");
	layerefA = "document.";
	layerefB = "";
	layerefC = "";
}