// Browser Detect  v2.1.6 - (slightly modified for Prototype consistency by Phosworks AB 060418)
// documentation: http://www.dithered.com/javascript/browser_detect/index.html
// license: http://creativecommons.org/licenses/by/1.0/
// code by Chris Nott (chris[at]dithered[dot]com)
var BrowserDetect = Class.create();
BrowserDetect.prototype = {
	initialize: function() {
		var ua = navigator.userAgent.toLowerCase(); 
		
		// browser engine name
		this.isGecko       = (ua.indexOf('gecko') != -1 && ua.indexOf('safari') == -1);
		this.isAppleWebKit = (ua.indexOf('applewebkit') != -1);
		
		// browser name
		this.isKonqueror   = (ua.indexOf('konqueror') != -1); 
		this.isSafari      = (ua.indexOf('safari') != - 1);
		this.isOmniweb     = (ua.indexOf('omniweb') != - 1);
		this.isOpera       = (ua.indexOf('opera') != -1); 
		this.isIcab        = (ua.indexOf('icab') != -1); 
		this.isAol         = (ua.indexOf('aol') != -1); 
		this.isIE          = (ua.indexOf('msie') != -1 && !this.isOpera && (ua.indexOf('webtv') == -1) ); 
		this.isMozilla     = (this.isGecko && ua.indexOf('gecko/') + 14 == ua.length);
		this.isFirebird    = (ua.indexOf('firebird/') != -1);
		this.isFirefox	   = (ua.indexOf('firefox/') != -1);
		this.isNS          = ( (this.isGecko) ? (ua.indexOf('netscape') != -1) : ( (ua.indexOf('mozilla') != -1) && !this.isOpera && !this.isSafari && (ua.indexOf('spoofer') == -1) && (ua.indexOf('compatible') == -1) && (ua.indexOf('webtv') == -1) && (ua.indexOf('hotjava') == -1) ) );
		
		// spoofing and compatible browsers
		this.isIECompatible = ( (ua.indexOf('msie') != -1) && !this.isIE);
		this.isNSCompatible = ( (ua.indexOf('mozilla') != -1) && !this.isNS && !this.isMozilla);
		
		// rendering engine versions
		this.geckoVersion = ( (this.isGecko) ? ua.substring( (ua.lastIndexOf('gecko/') + 6), (ua.lastIndexOf('gecko/') + 14) ) : -1 );
		this.equivalentMozilla = ( (this.isGecko) ? parseFloat( ua.substring( ua.indexOf('rv:') + 3 ) ) : -1 );
		this.appleWebKitVersion = ( (this.isAppleWebKit) ? parseFloat( ua.substring( ua.indexOf('applewebkit/') + 12) ) : -1 );
		
		// browser version
		this.versionMinor = parseFloat(navigator.appVersion); 
		
		// correct version number
		if (this.isGecko && !this.isMozilla) {
		  this.versionMinor = parseFloat( ua.substring( ua.indexOf('/', ua.indexOf('gecko/') + 6) + 1 ) );
		}
		else if (this.isMozilla) {
		  this.versionMinor = parseFloat( ua.substring( ua.indexOf('rv:') + 3 ) );
		}
		else if (this.isIE && this.versionMinor >= 4) {
		  this.versionMinor = parseFloat( ua.substring( ua.indexOf('msie ') + 5 ) );
		}
		else if (this.isKonqueror) {
		  this.versionMinor = parseFloat( ua.substring( ua.indexOf('konqueror/') + 10 ) );
		}
		else if (this.isSafari) {
		  this.versionMinor = parseFloat( ua.substring( ua.lastIndexOf('safari/') + 7 ) );
		}
		else if (this.isOmniweb) {
		  this.versionMinor = parseFloat( ua.substring( ua.lastIndexOf('omniweb/') + 8 ) );
		}
		else if (this.isOpera) {
		  this.versionMinor = parseFloat( ua.substring( ua.indexOf('opera') + 6 ) );
		}
		else if (this.isIcab) {
		  this.versionMinor = parseFloat( ua.substring( ua.indexOf('icab') + 5 ) );
		}
		
		this.versionMajor = parseInt(this.versionMinor); 
		
		// dom support
		this.isDOM1 = (document.getElementById);
		this.isDOM2Event = (document.addEventListener && document.removeEventListener);
		
		// css compatibility mode
		this.mode = document.compatMode ? document.compatMode : 'BackCompat';
		
		// 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 || ua.indexOf('xp') != -1) );
		this.isMac    = (ua.indexOf('mac') != -1);
		this.isUnix   = (ua.indexOf('unix') != -1 || ua.indexOf('sunos') != -1 || ua.indexOf('bsd') != -1 || ua.indexOf('x11') != -1)
		this.isLinux  = (ua.indexOf('linux') != -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.isNS7x = (this.isNS && this.versionMajor == 7);
		this.isNS7up = (this.isNS && this.versionMajor >= 7);
		
		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);	
	}
}
var Browser = new BrowserDetect();

var IEFixer = {
	FixIE: function() {
		if ( document.getElementsByTagName && document.createElement ) {
			this.replacePngImages();
			this.fixMenuSuckerFish();
		}
	},
	
	replacePngImages: function() {
		var tempImg = document.getElementsByTagName('img');
		for ( i=0; i<tempImg.length; i++ ) {
			if ( /.*\.png$/.test(tempImg[i].src) ) 
			{
				var imgDim = Element.getDimensions(tempImg[i]);
				var pngImg = document.createElement('img');
				pngImg.src = "images/pixel.gif";
				pngImg.className = tempImg[i].className;
				pngImg.alt = tempImg[i].alt;
				Element.setStyle(pngImg, {width: imgDim.width, height: imgDim.height});
				Element.setStyle(pngImg, {filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+tempImg[i].src+"', sizingMethod='crop')"});
				tempImg[i].parentNode.replaceChild(pngImg, tempImg[i]);
			}
		}
	},
	
	fixMenuSuckerFish: function() {
		var mItem = document.getElementById('mainMenu');
		var subItems = mItem.getElementsByTagName('li');
		for( i=0; i<subItems.length; i++ ) {
			if ( subItems[i].className.indexOf('active')==-1 ) {
				subItems[i].onmouseover = function() {
					this.className += " mhover";
				}
				subItems[i].onmouseout = function() {
					this.className=this.className.replace(new RegExp(" mhover\\b"), "");
				}
			}
		}
	}		
}
if ( Browser.isIE ) Event.observe(window, 'load', IEFixer.FixIE.bind(IEFixer), false);