var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{
			string: navigator.userAgent,
			subString: "Chrome",
			identity: "Chrome"
		},
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			   string: navigator.userAgent,
			   subString: "iPhone",
			   identity: "iPhone/iPod"
	    },
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();

function getElementsByClassName(oElm, strTagName, strClassName){
    var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    strClassName = strClassName.replace(/\-/g, "\\-");
    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
    var oElement;
    for(var i=0; i<arrElements.length; i++){
        oElement = arrElements[i];      
        if(oRegExp.test(oElement.className)){
            arrReturnElements.push(oElement);
        }   
    }
    return (arrReturnElements)
}

var bSubmitForm = false;
function submitForm(formId) {
	bSubmitForm = true;
	document.getElementById(formId).submit();
}

function updateLinkLog(module_id, module_name, frompage) {
	var url = 'sAjaxRequest.php';
	var pars = 'type=addLogUrl&module_id='+module_id+'&module_name='+module_name+'&frompage='+escape(frompage);

	var ajaxRequest = new Ajax.Request (
		url,
		{
			method: 'get',
			parameters: pars,
			onComplete: handleUpdateLinkLog
		}
	);
}

function handleUpdateLinkLog(e) {
}

function goTo(x) {
	window.location.href = x;
}

function showComingSoon() {
	alert('Coming soon!');
}

function ImagePreloader(images, strCallback)
{
   // store the strCallback
   this.strCallback = strCallback;
 
   // initialize internal state.
   this.nLoaded = 0;
   this.nProcessed = 0;
   this.aImages = new Array;
 
   // record the number of images.
   this.nImages = images.length;
 
   // for each image, call preload()
   for ( var i = 0; i < images.length; i++ )
      this.preload(images[i]);
}
ImagePreloader.prototype.preload = function(image)
{
   // create new Image object and add to array
   var oImage = new Image;
   this.aImages.push(oImage);
  
   // set up event handlers for the Image object
   oImage.onload = ImagePreloader.prototype.onload;
   oImage.onerror = ImagePreloader.prototype.onerror;
   oImage.onabort = ImagePreloader.prototype.onabort;
  
   // assign pointer back to this.
   oImage.oImagePreloader = this;
   oImage.bLoaded = false;
  
   // assign the .src property of the Image object
   oImage.src = image;
}
ImagePreloader.prototype.onComplete = function()
{
   this.nProcessed++;
   if ( this.nProcessed == this.nImages )
   {
      this.strCallback(this.aImages, this.nLoaded);
   }
}
ImagePreloader.prototype.onload = function()
{
   this.bLoaded = true;
   this.oImagePreloader.nLoaded++;
   this.oImagePreloader.onComplete();
}
ImagePreloader.prototype.onerror = function()
{
   this.bError = true;
   this.oImagePreloader.onComplete();
}
ImagePreloader.prototype.onabort = function()
{
   this.bAbort = true;
   this.oImagePreloader.onComplete();
}
/*
function imgPreloader(aImages, toEval){
     // counter
     var i = 0;


     // create object
     imageObj = new Image();

     // set image list
     images = new Array();
	for(i=0; i<aImages.length; i++) {
		images[i]=aImages[i];
	}

     // start preloading
     for(i=0; i<aImages.length; i++) 
     {
          imageObj.src=images[i];
     }
	 if (toEval != undefined && toEval != '') {
		 imageObj.onLoad=startPresentation();
	 }
}
*/
function getRegionInfo(regionId) {
	goTo('regions.php#region_'+regionId);
	var highlightMe = new Effect.Highlight('div_' + regionId);
}

function inArray(needle, haystack) {
	for (var i = 0; i < haystack.length; i++) {
		if (haystack[i] == needle) {
			return true;
		}
	}
	return false;
}

var previousDisplay = '';
function reverseDisplay(elementId) {
	var elementTmp = document.getElementById(elementId);
	if (previousDisplay != '' && previousDisplay != elementId) {
		Effect.Fade(previousDisplay, { duration: 0.5, mode: 'absolute', transition: Effect.Transitions.sinoidal});
	}
	if (elementTmp.style.display != 'none') {
		Effect.Fade(elementId, { duration: 0.7, mode: 'absolute', transition: Effect.Transitions.sinoidal});
		previousDisplay = '';
	}
	else {
		Effect.Appear(elementId, { duration: 0.7, mode: 'absolute', transition: Effect.Transitions.sinoidal});
		previousDisplay = elementId;
	}
}