// PNG Fix
// Browser Detect Lite  v2.1

// http://www.dithered.com/javascript/browser_detect/index.html

// modified by Chris Nott (chris@NOSPAMdithered.com - remove NOSPAM)

//

// modified by Michael Lovitt to include OmniWeb and Dreamcast



function BrowserDetectLite() {

	var ua = navigator.userAgent.toLowerCase();

	this.ua = ua;



	// browser name

	this.isGecko     = (ua.indexOf('gecko') != -1);

	this.isMozilla   = (this.isGecko && ua.indexOf("gecko/") + 14 == ua.length);

	this.isNS        = ( (this.isGecko) ? (ua.indexOf('netscape') != -1) : ( (ua.indexOf('mozilla') != -1) && (ua.indexOf('spoofer') == -1) && (ua.indexOf('compatible') == -1) && (ua.indexOf('opera') == -1) && (ua.indexOf('webtv') == -1) && (ua.indexOf('hotjava') == -1) ) );

	this.isIE        = ( (ua.indexOf("msie") != -1) && (ua.indexOf("opera") == -1) && (ua.indexOf("webtv") == -1) );

	this.isOpera     = (ua.indexOf("opera") != -1);

	this.isKonqueror = (ua.indexOf("konqueror") != -1);

	this.isIcab      = (ua.indexOf("icab") != -1);

	this.isAol       = (ua.indexOf("aol") != -1);

	this.isWebtv     = (ua.indexOf("webtv") != -1);

	this.isOmniweb   = (ua.indexOf("omniweb") != -1);

	this.isDreamcast   = (ua.indexOf("dreamcast") != -1);



	// spoofing and compatible browsers

	this.isIECompatible = ( (ua.indexOf("msie") != -1) && !this.isIE);

	this.isNSCompatible = ( (ua.indexOf("mozilla") != -1) && !this.isNS && !this.isMozilla);



	// browser version

	this.versionMinor = parseFloat(navigator.appVersion);



	// correct version number for NS6+

	if (this.isNS && this.isGecko) {

		this.versionMinor = parseFloat( ua.substring( ua.lastIndexOf('/') + 1 ) );

	}



	// correct version number for IE4+

	else if (this.isIE && this.versionMinor >= 4) {

		this.versionMinor = parseFloat( ua.substring( ua.indexOf('msie ') + 5 ) );

	}



	// correct version number for Opera

	else if (this.isOpera) {

		if (ua.indexOf('opera/') != -1) {

			this.versionMinor = parseFloat( ua.substring( ua.indexOf('opera/') + 6 ) );

		}

		else {

			this.versionMinor = parseFloat( ua.substring( ua.indexOf('opera ') + 6 ) );

		}

	}



	// correct version number for Konqueror

	else if (this.isKonqueror) {

		this.versionMinor = parseFloat( ua.substring( ua.indexOf('konqueror/') + 10 ) );

	}



	// correct version number for iCab

	else if (this.isIcab) {

		if (ua.indexOf('icab/') != -1) {

			this.versionMinor = parseFloat( ua.substring( ua.indexOf('icab/') + 6 ) );

		}

		else {

			this.versionMinor = parseFloat( ua.substring( ua.indexOf('icab ') + 6 ) );

		}

	}



	// correct version number for WebTV

	else if (this.isWebtv) {

		this.versionMinor = parseFloat( ua.substring( ua.indexOf('webtv/') + 6 ) );

	}



	this.versionMajor = parseInt(this.versionMinor);

	this.geckoVersion = ( (this.isGecko) ? ua.substring( (ua.lastIndexOf('gecko/') + 6), (ua.lastIndexOf('gecko/') + 14) ) : -1 );



	// platform

	this.isWin   = (ua.indexOf('win') != -1);

	this.isWin32 = (this.isWin && ( ua.indexOf('95') != -1 || ua.indexOf('98') != -1 || ua.indexOf('nt') != -1 || ua.indexOf('win32') != -1 || ua.indexOf('32bit') != -1) );

	this.isMac   = (ua.indexOf('mac') != -1);

	this.isUnix  = (ua.indexOf('unix') != -1 || ua.indexOf('linux') != -1 || ua.indexOf('sunos') != -1 || ua.indexOf('bsd') != -1 || ua.indexOf('x11') != -1)



	// specific browser shortcuts

	this.isNS4x = (this.isNS && this.versionMajor == 4);

	this.isNS40x = (this.isNS4x && this.versionMinor < 4.5);

	this.isNS47x = (this.isNS4x && this.versionMinor >= 4.7);

	this.isNS4up = (this.isNS && this.versionMinor >= 4);

	this.isNS6x = (this.isNS && this.versionMajor == 6);

	this.isNS6up = (this.isNS && this.versionMajor >= 6);



	this.isIE4x = (this.isIE && this.versionMajor == 4);

	this.isIE4up = (this.isIE && this.versionMajor >= 4);

	this.isIE5x = (this.isIE && this.versionMajor == 5);

	this.isIE55 = (this.isIE && this.versionMinor == 5.5);

	this.isIE5up = (this.isIE && this.versionMajor >= 5);

	this.isIE6x = (this.isIE && this.versionMajor == 6);

	this.isIE6up = (this.isIE && this.versionMajor >= 6);



	this.isIE4xMac = (this.isIE4x && this.isMac);

}


////////////////////////////////
function insertPNG(strId, strPath, intWidth, intHeight, strClass, strAlt) {
	if (pngAlpha) {
		document.write('<img style="height:'+intHeight+'px;width:'+intWidth+'px;filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\''+strPath+'.png\', sizingMethod=\'scale\')" id="'+strId+'" class="'+strClass+'" src="images/pngfix.gif" border="0">');
	} else if (pngNormal) {
		document.write('<img src="'+strPath+'.png" width="'+intWidth+'" height="'+intHeight+'" id="'+strId+'" name="'+strId+'" border="0" class="'+strClass+'" alt="'+strAlt+'" />');
	
	} else {
		document.write('<img src="'+strPath+'.gif" width="'+intWidth+'" height="'+intHeight+'" id="'+strId+'" name="'+strId+'" border="0" class="'+strClass+'" alt="'+strAlt+'" />');
	}
}

var browser = new BrowserDetectLite();

// if IE5.5+ on win32, then display PNGs with AlphaImageLoader - dependent on Browser Detect Lite
if ((browser.isIE55 || browser.isIE6up) && browser.isWin32) {
	var pngAlpha = true;
	var strExt = ".png";
// else, if the browser can display PNGs normally, then do that. that list includes:
	//     -Gecko Engine: Netscape 6 or Mozilla, Mac or PC
	//     -IE5+ Mac
	//     -Opera 6+ PC
	//     -Opera 5+ Mac
	//     -Opera 6+ Linux
	//     -Omniweb 3.1+
	//     -Icab 1.9+
	//     -WebTV
	//     -Sega Dreamcast
} else if ((browser.isGecko) || (browser.isIE5up && browser.isMac) || (browser.isOpera && browser.isWin && browser.versionMajor >= 6) || (browser.isOpera && browser.isUnix && browser.versionMajor >= 6) || (browser.isOpera && browser.isMac && browser.versionMajor >= 5) || (browser.isOmniweb && browser.versionMinor >= 3.1) || (browser.isIcab && browser.versionMinor >= 1.9) || (browser.isWebtv) || (browser.isDreamcast)) {
	var pngNormal = true;
	var strExt = ".png";
	// otherwise, we use plain old GIFs
} else {
	var strExt = ".gif";
}
////////////////////////////////

popUpWindow = function(URL,windowName,width,height) {
	var w = screen.availWidth;
	var h = screen.availHeight;
	var leftPos = Math.round((w-width)/2);
	var topPos = Math.round((h-height)/2);
	var defaults = "scrollbars=yes,resizable=yes,";
	var centerOnScreen = "top="+topPos+",left="+leftPos+",width="+width+",height="+height;
	// safari seems to need the trailer comma
	var options = defaults + centerOnScreen + ",";
	var msgWindow = window.open(URL,windowName,options);
	msgWindow.focus();
}