/* Browser detection */
function Brows ()
{ 

    // *** BROWSER VERSION ***
    // Note: On IE5, these return 4, so use brows.ie5up to detect IE5.

    this.majorBrowserVersion = parseInt(navigator.appVersion);
    var agt=navigator.userAgent.toLowerCase();

    // *** BROWSER VERSION ***
    // Note: On IE5, these return 4, so use brows.ie5up to detect IE5.

    this.majorBrowserVersion = parseInt(navigator.appVersion);
    this.minorBrowserVersion = parseFloat(navigator.appVersion);

    // Note: Opera and WebTV spoof Navigator.  We do strict client detection.
    // If you want to allow spoofing, take out the tests for opera and webtv.
    this.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));
    this.nav2 = (this.nav && (this.majorBrowserVersion == 2));
    this.nav3 = (this.nav && (this.majorBrowserVersion == 3));
    this.nav4 = (this.nav && (this.majorBrowserVersion == 4));
    this.nav4up = (this.nav && (this.majorBrowserVersion >= 4));
    this.navonly      = (this.nav && ((agt.indexOf(";nav") != -1) ||
                          (agt.indexOf("; nav") != -1)) );
    this.nav6 = (this.nav && (this.majorBrowserVersion == 5));
    this.nav6up = (this.nav && (this.majorBrowserVersion >= 5));
    this.gecko = (agt.indexOf('gecko') != -1);


    this.ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
    this.ie3    = (this.ie && (this.majorBrowserVersion < 4));
    this.ie4    = (this.ie && (this.majorBrowserVersion == 4) && (agt.indexOf("msie 4")!=-1) );
    this.ie4up  = (this.ie  && (this.majorBrowserVersion >= 4));
    this.ie5    = (this.ie && (this.majorBrowserVersion == 4) && (agt.indexOf("msie 5.0")!=-1) );
    this.ie5_5  = (this.ie && (this.majorBrowserVersion == 4) && (agt.indexOf("msie 5.5") !=-1));
    this.ie5up  = (this.ie  && !this.ie3 && !this.ie4);
    this.ie5_5up =(this.ie && !this.ie3 && !this.ie4 && !this.ie5);
    this.ie6    = (this.ie && (this.majorBrowserVersion == 4) && (agt.indexOf("msie 6.")!=-1) );
    this.ie6up  = (this.ie  && !this.ie3 && !this.ie4 && !this.ie5 && !this.ie5_5);

    // *** JAVASCRIPT VERSION CHECK ***
    if (this.nav2 || this.ie3) this.js = 1.0;
    else if (this.nav3) this.js = 1.1;
    else if (this.opera5up) this.js = 1.3;
    else if (this.opera) this.js = 1.1;
    else if ((this.nav4 && (this.minorBrowserVersion <= 4.05)) || this.ie4) this.js = 1.2;
    else if ((this.nav4 && (this.minorBrowserVersion > 4.05)) || this.ie5) this.js = 1.3;
    else if (this.hotjava3up) this.js = 1.4;
    else if (this.nav6 || this.gecko) this.js = 1.5;
    // NOTE: In the future, update this code when newer versions of JS
    // are released. For now, we try to provide some upward compatibility
    // so that future versions of Nav and IE will show they are at
    // *least* JS 1.x capable. Always check for JS version compatibility
    // with > or >=.
    else if (this.nav6up) this.js = 1.5;
    // note ie5up on mac is 1.4
    else if (this.ie5up) this.js = 1.3

    // HACK: no idea for other browsers; always check for JS version with > or >=
    else this.js = 0.0;

    // *** PLATFORM ***
    this.win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
    // NOTE: On Opera 3.0, the userAgent string includes "Windows 95/NT4" on all
    //        Win32, so you can't distinguish between Win95 and WinNT.
    this.win95 = ((agt.indexOf("win95")!=-1) || (agt.indexOf("windows 95")!=-1));

    // NOTE: Reliable detection of Win98 may not be possible. It appears that:
    //       - On Nav 4.x and before you'll get plain "Windows" in userAgent.
    //       - On Mercury client, the 32-bit version will return "Win98", but
    //         the 16-bit version running on Win98 will still return "Win95".
    this.win98 = ((agt.indexOf("win98")!=-1) || (agt.indexOf("windows 98")!=-1));
    this.winnt = ((agt.indexOf("winnt")!=-1) || (agt.indexOf("windows nt")!=-1));
    this.win32 = (this.win95 || this.winnt || this.win98 || 
                    ((this.majorBrowserVersion >= 4) && (navigator.platform == "Win32")) ||
                    (agt.indexOf("win32")!=-1) || (agt.indexOf("32bit")!=-1));

    this.winme = ((agt.indexOf("win 9x 4.90")!=-1));
    this.win2k = ((agt.indexOf("windows nt 5.0")!=-1));

    this.mac    = (agt.indexOf("mac")!=-1);
    // hack ie5 js version for mac
    if (this.mac && this.ie5up) this.js = 1.4;
    this.mac68k = (this.mac && ((agt.indexOf("68k")!=-1) || 
                               (agt.indexOf("68000")!=-1)));
    this.macppc = (this.mac && ((agt.indexOf("ppc")!=-1) || 
                                (agt.indexOf("powerpc")!=-1)));

    this.sun   = (agt.indexOf("sunos")!=-1);
    this.sun4  = (agt.indexOf("sunos 4")!=-1);
    this.sun5  = (agt.indexOf("sunos 5")!=-1);
    this.suni86= (this.sun && (agt.indexOf("i86")!=-1));
    this.linux = (agt.indexOf("inux")!=-1);
    this.freebsd = (agt.indexOf("freebsd")!=-1);
    this.bsd = (agt.indexOf("bsd")!=-1);
    this.unix  = ((agt.indexOf("x11")!=-1) || this.sun || this.linux || this.bsd || this.freebsd);
}

var cb_wroteCSS = false;

function coolButtons(classPrefix, cssFile, target) {
	if (classPrefix == null) classPrefix = 'btn_';
	brows = new Brows();
	if ((brows.ie5up && !brows.mac) || brows.nav6up) {

		// IMPORT STYLESHEET FOR BUTTONS
		if (cb_wroteCSS != true && typeof(cssFile) == 'string') {
			document.writeln('<style type="text/css">');
			document.writeln('@import url("'+cssFile+'");');
			document.writeln('</style>');
			cb_wroteCSS = true;
		}

		if (target == null) {
		    target = document.getElementsByTagName('body')[0];
		} else if (typeof(target) == 'string') {
		    target = document.getElementById(target);
		}
		if (typeof(target.getElementsByTagName) == 'undefined') return false;
		inputs = target.getElementsByTagName('input');
		
		for (i = 0; i < inputs.length; i++) {

			if (inputs[i].type == 'button' || inputs[i].type == 'submit' || inputs[i].type == 'reset') {
			var value = inputs[i].value.replace(/^\s+|\s+$/g, ''); // trim value
			var type = inputs[i].type;
					
			    if (inputs[i].className == '' || inputs[i].className.indexOf('btn_') != -1) {
					
					// IF BUTTONS DO NOT HAVE AN ASSIGNED CLASS... 
					if (inputs[i].className == '') {

						// ASSIGN GENERIC CLASS TO CLASSLESS BUTTONS
						inputs[i].className = classPrefix+'generic';

						// ASSIGN SOME CUSTOM CLASSES TO COMONLY USED BUTTONS
						if (value == 'submit' || value == 'go')
						{
							inputs[i].className = classPrefix+'go';
						}
						if (value.search(/^add/i) != -1)
						{
							inputs[i].className = classPrefix+'add';
						}
						if (value.search(/spelling/i) != -1)
						{
							inputs[i].className = classPrefix+'spellcheck';
						}
						if (value.search(/save/i) != -1) 
						{
							inputs[i].className = classPrefix+'save';
						}
						if (value.search(/search/i) != -1 || value.search(/apply filters/i) != -1)
						{
							inputs[i].className = classPrefix+'search';
						}
						if (type == 'reset' || value.search(/clear/i) != -1 || value.search(/reset/i) != -1)
						{
							inputs[i].className = classPrefix+'reset';
						}
						if (value.search(/cancel/i) != -1 || value.search(/delete/i) != -1 || value.search(/remove/i) != -1) 
						{
							inputs[i].className = classPrefix+'cancel';
						}
						if (value.search(/continue/i) != -1 || value == 'go')
						{
							inputs[i].className = classPrefix+'go';
						}
						if (value.search(/back/i) != -1)
						{
							inputs[i].className = classPrefix+'back';
						}

					}

					// ADD BROWSER-SPECIFIC SUFFIXES TO CLASSNAMES
				if (brows.ie5 && inputs[i].className.indexOf('_ie5') == -1) {
				    inputs[i].className += '_ie5';
				}
				else if (brows.ie5_5up && inputs[i].className.indexOf('_ie5_5up') == -1) {
				    inputs[i].className += '_ie5_5up';
				}
				// Mozilla 5 -- CHECK NS 6+, Any issues with other geckos?
				else if (brows.nav6up && inputs[i].className.indexOf('_nav6up') == -1) {
				    inputs[i].className += '_nav6up';
				}
			    }
			}
		}
	}
}