// SMS JavaScript Browser Sniffer
// Based on "JavaScript Browser Sniffer" by
// Eric Krok, Andy King, Michel Plungjan Jan. 31, 2002
// Modified under the GNU General Public License, version 2
// as published by the Free Software Foundation,
// see http://www.webreference.com/ for more information


// convert all characters to lowercase to simplify testing
	var agt=navigator.userAgent.toLowerCase();
	var appVer = navigator.appVersion.toLowerCase();

// *** Lookup Browser Verson ***

	var is_minor = parseFloat(appVer);
	var is_major = parseInt(is_minor);

	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);
	var is_opera7 = (agt.indexOf("opera 7") != -1 || agt.indexOf("opera/7") != -1);
	var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);
	var is_opera6up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5);
	var is_opera7up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5 && !is_opera6);

	var iePos = appVer.indexOf('msie');
	if (iePos !=-1) {
		is_minor = parseFloat(appVer.substring(iePos+5,appVer.indexOf(';',iePos)))
		is_major = parseInt(is_minor);
	}

	var is_konq = false;
	var kqPos = agt.indexOf('konqueror');
	if (kqPos !=-1) {
		is_konq = true;
		is_minor = parseFloat(agt.substring(kqPos+10,agt.indexOf(';',kqPos)));
		is_major = parseInt(is_minor);
	}

	var is_getElementById = (document.getElementById) ? "true" : "false";
	var is_getElementsByTagName = (document.getElementsByTagName) ? "true" : "false";
	var is_documentElement = (document.documentElement) ? "true" : "false";

	var is_safari = ((agt.indexOf('safari')!=-1)&&(agt.indexOf('mac')!=-1))?true:false;
	var is_khtml = (is_safari || is_konq);

	var is_gecko = ((!is_khtml)&&(navigator.product)&&(navigator.product.toLowerCase()=="gecko"))?true:false;
	var is_gver = 0;
	if (is_gecko) is_gver=navigator.productSub;

	var is_moz = ((agt.indexOf('mozilla/5')!=-1) && (agt.indexOf('spoofer')==-1) &&
		(agt.indexOf('compatible')==-1) && (agt.indexOf('opera')==-1) &&
		(agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1) &&
		(is_gecko) &&
		((navigator.vendor=="")||(navigator.vendor=="Mozilla")));
	var is_fb = ((agt.indexOf('mozilla/5')!=-1) && (agt.indexOf('spoofer')==-1) &&
		(agt.indexOf('compatible')==-1) && (agt.indexOf('opera')==-1) &&
		(agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1) &&
		(is_gecko) && (navigator.vendor=="Firebird"));

	if ((is_moz)||(is_fb)) { 
		var is_moz_ver = (navigator.vendorSub)?navigator.vendorSub:0;
		if(!(is_moz_ver)) {
			is_moz_ver = agt.indexOf('rv:');
			is_moz_ver = agt.substring(is_moz_ver+3);
			is_paren = is_moz_ver.indexOf(')');
			is_moz_ver = is_moz_ver.substring(0,is_paren);
		}
		is_minor = is_moz_ver;
		is_major = parseInt(is_moz_ver);
	}

	var is_fb_ver = is_moz_ver;

	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)
		&& (!is_khtml) && (!(is_moz)) &&(!is_fb));

	if ((navigator.vendor)&&
		((navigator.vendor=="Netscape6")||(navigator.vendor=="Netscape"))&&
		(is_nav)) {
			is_major = parseInt(navigator.vendorSub);
			is_minor = parseFloat(navigator.vendorSub);
		}

	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_minor >= 4);
	var is_nav4down = (is_nav && is_major <= 4);
	var is_navonly = (is_nav && ((agt.indexOf(";nav") != -1) ||
		(agt.indexOf("; nav") != -1)) );

	var is_nav6 = (is_nav && is_major==6);
	var is_nav6up = (is_nav && is_minor >= 6)

	var is_nav5 = (is_nav && is_major == 5 && !is_nav6);
	var is_nav5up = (is_nav && is_minor >= 5);

	var is_nav7 = (is_nav && is_major == 7);
	var is_nav7up = (is_nav && is_minor >= 7);

	var is_ie = ((iePos!=-1) && (!is_opera) && (!is_khtml));
	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 = (is_ie && is_major == 5);
	var is_ie5up = (is_ie && is_minor >= 5);
	var is_ie5down = (is_ie && is_minor < 5);

	var is_ie5_5 = (is_ie && (agt.indexOf("msie 5.5") !=-1));
	var is_ie5_5up =(is_ie && is_minor >= 5.5);

	var is_ie6 = (is_ie && is_major == 6);
	var is_ie6up = (is_ie && is_minor >= 6);

	var is_aol = (agt.indexOf("aol") != -1);
	var is_aol3 = (is_aol && is_ie3);
	var is_aol4 = (is_aol && is_ie4);
	var is_aol5 = (agt.indexOf("aol 5") != -1);
	var is_aol6 = (agt.indexOf("aol 6") != -1);
	var is_aol7 = ((agt.indexOf("aol 7")!=-1) || (agt.indexOf("aol7")!=-1));
	var is_aol8 = ((agt.indexOf("aol 8")!=-1) || (agt.indexOf("aol8")!=-1));

	var is_webtv = (agt.indexOf("webtv") != -1);

	var is_TVNavigator = ((agt.indexOf("navio") != -1) || (agt.indexOf("navio_aoltv") != -1));
	var is_AOLTV = is_TVNavigator;

	var is_hotjava = (agt.indexOf("hotjava") != -1);
	var is_hotjava3 = (is_hotjava && (is_major == 3));
	var is_hotjava3up = (is_hotjava && (is_major >= 3));

	// *** Check for Cookies ***

	document.cookie = "cookies=true";
	var is_cookie = (document.cookie) ? "true" : "false";


	// **# Show SMS Error Messages ***

	function showDetectMessages() {
//		document.write("<p>");
//		document.write("nav4down: " + is_nav4down + "<br />");
//		document.write("ie5down: " + is_ie5down + "<br />");
//		document.write("aol: " + is_aol + "<br />");
//		document.write("document.cookie: " + is_cookie + "<br />");
//		document.write("is_major: " + is_major + "<br />");
//		document.write("is_minor: " + is_minor + "<br />");
//		document.write("userAgent: " + agt + "<br />");
//		document.write("appVer: " + appVer + "<br />");
//		document.write("</p>");

		if ( is_nav4down || is_ie5down || is_aol ) {
			document.write('<div id="browserError">');
			document.write('<table width="744" border="0" cellpadding="0" cellspacing="0">');
			document.write('<tr valign="top">');
			document.write('<td width="12"><img src="../images/dot.gif" width="12" height="10" /></td>');
			document.write('<td width="40"><img src="../images/icons/error-large.gif" alt="Error!" width="40" height="31" /></td>');
			document.write('<td width="680">');
			document.write("<p><strong>We've detected a problem with your Web browser. Please carefully ");
			document.write("read the following text and change your browser as necessary.</strong></p>");
			
			if (is_ie5down) {
				document.write("<p><strong>Updated Browser Recommended</strong><br />");
				document.write("We've detected that your Web browser, Internet Explorer, is an older ");
				document.write("version that may prevent you from completing this registration. ");
				document.write("We strongly recommend that you");
				document.write('<a href="http://www.microsoft.com/">upgrade to the latest version of Microsoft\'s Web browser</a>.</p>');
			}			
			if (is_nav4down) {
				document.write("<p><strong>Updated Browser Recommended</strong><br />");
				document.write("We've detected that your Web browser, Netscape, is an older version that may ");
				document.write("prevent you from completing this registration. We strongly recommend that you ");
				document.write('<a href="http://www.netscape.com">upgrade to the latest version of Netscape\'s Web browser</a>.</p>');
			}
			if (is_aol) {
				document.write("<p><strong>Updated Browser Required</strong><br />");
				document.write("We've detected that you're using an AOL browser. ");
				document.write("This type of Web browser will not work with this registration process. ");
				document.write("You should use another Web browser, such as Internet Explorer or Netscape.</p>");
			}
			document.write('</td>');
			document.write('<td width="12"><img src="../images/dot.gif" width="12" height="10" /></td>');
			document.write('</tr>');
			document.write('</table>');
			document.write('</div>');
		}
	}