/* 
===========================================================
	DISCLAIMER
===========================================================
*/

function showDisclaimer(linkId) 
{
	document.getElementById("link").href = linkId;
	openModalDiv("disclaimer",-150);
}

function closeDisclaimer()
{ 
	closeModalDiv("disclaimer"); 
}

/*
==================================================
	AUXILIAR FUNCTIONS
==================================================
*/

function CenterDiv(objDiv,objIframe,parentDiv)
{
	objDiv.style.display = "block";
	objIframe.style.display = "block";
	
	// if parentDiv is relative positioned
	if (parentDiv != "")
	{
		parentLeft = parentDiv.offsetLeft;
	}
	else
	{
		parentLeft = 0;		
	}
	
	scrollYPosition = getScrollYPosition();
	pageWidth = getPageWidth();
	pageHeight = getPageHeight();

	topPosition = parseInt(scrollYPosition + (pageHeight - objDiv.offsetHeight) / 2);
	leftPosition = parseInt(((pageWidth - objDiv.offsetWidth) / 2) - parentLeft);

	objDiv.style.top = topPosition + "px";
	objIframe.style.top = topPosition + "px";

	objDiv.style.left = leftPosition + "px";
	objIframe.style.left = leftPosition + "px";
	
	objIframe.style.zIndex = 100000;
	objDiv.style.zIndex = 150000;
}



function getScrollYPosition()
{
	var aux;
	var agt = new getBrowser();
	
	if (agt.browser == "Firefox")
	{ 
		aux = window.pageYOffset;
	}
	else if (agt.browser == "Explorer")
	{
		aux = document.documentElement.scrollTop;	
	}
	else
	{
		aux = document.body.scrollTop;	
	}

	return aux;
}

function getPageWidth()
{
	var aux;
	var agt = new getBrowser();
	
	if (agt.browser == "Firefox")
	{ 
		aux = self.innerWidth;
	}
	else
	{
		aux = document.body.offsetWidth;
	}

	return aux;
}


function getPageHeight()
{
	var aux;
	
	var agt = new getBrowser();
	
	if (agt.browser == "Firefox")
	{ 
		aux = self.innerHeight;
	}
	else if (agt.browser == "Explorer")
	{
		aux = document.documentElement.offsetHeight;
	}
	else
	{
		aux = self.innerHeight;
	}
	
	return aux;
}


function getBrowser()
{
	BrowserDetect.init();
	
	this.browser = BrowserDetect.browser;
	this.version = BrowserDetect.version;
	this.os = BrowserDetect.OS;
}

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: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			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.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};


function getElementsByClassName(oElm, strTagName, oClassNames){
	var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	var arrRegExpClassNames = new Array();
	if(typeof oClassNames == "object"){
		for(var i=0; i<oClassNames.length; i++){
			arrRegExpClassNames.push(new RegExp("(^|\s)" + oClassNames[i].replace(/-/g, "\-") + "(\s|$)"));
		}
	}
	else{
		arrRegExpClassNames.push(new RegExp("(^|\s)" + oClassNames.replace(/-/g, "\-") + "(\s|$)"));
	}
	var oElement;
	var bMatchesAll;
	for(var j=0; j<arrElements.length; j++){
		oElement = arrElements[j];
		bMatchesAll = true;
		for(var k=0; k<arrRegExpClassNames.length; k++){
			if(!arrRegExpClassNames[k].test(oElement.className)){
				bMatchesAll = false;
				break;
			}
		}
		if(bMatchesAll){
			arrReturnElements.push(oElement);
		}
	}
	return (arrReturnElements)
}

function lightbox() {
	var anchor		= getElementsByClassName(document, 'a', 'light-box');
	var closeButton	= getElementsByClassName(document, 'a', 'close-button');

	var black	= document.getElementById('fade');
		black.style.display = 'none';
		
	var light	= document.getElementById('light');
		light.style.display = 'none';

	if(anchor) {
		for(var i = 0; i < anchor.length; i++) {
			anchor[i].onclick = function() {
				if(black.style.display == 'none' && light.style.display == 'none') {
					black.style.display = 'block';
					light.style.display = 'block';
				}
			};
		}
	}

	if(closeButton) {
		for(var j = 0; j < closeButton.length; j++) {
			closeButton[j].onclick = function() {
				black.style.display = 'none';
				light.style.display = 'none';
			};
		}
	}
}