/*
Several functions needed all over the site
Original by op351.com in http://op351.com/
( except when other specified )
*/
// ******************************* BROWSER DETECTION
// var to detect if browser is IE, FF or OPERA
// NOTA: Netscape foi descontinuado
var ie = false;
var ff = false;
var op = false;
if (/MSIE (\d+\.\d+);/.test(navigator.userAgent))
	{
    var ie = true;
	var whichBrowser = "Internet Explorer";    
    var version = new Number(RegExp.$1);
    var minVers = 6;  
    }
if (/Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent))
	{
    var ff = true;
	var whichBrowser = "Firefox";    
    var version = new Number(RegExp.$1);
    var minVers = 2;    
    }
if (/Opera[\/\s](\d+\.\d+)/.test(navigator.userAgent))
	{
    var op = true;
	var whichBrowser = "Opera";    
    var version = new Number(RegExp.$1);
    var minVers = 8;      
    }
if (/Mozilla[\/\s](\d+\.\d+)/.test(navigator.userAgent))
	{
	// for playstation    
	var agentID = navigator.userAgent.toLowerCase();
	if (agentID.indexOf("playstation 3") != -1)
    	{
		var ps = true;
		var whichBrowser = "Playstation";    
    	var version = new Number(RegExp.$1);	// usar a versão Mozilla
    	var minVers = 4;	// usar a versão Mozilla
        }        
    }
    
// var to define error pages
var errBrw = "http:///errors/error.php?errid=brw"; // error page to be redirected if not correct version
var errVer = "http:///errors/error.php?errid=ver"; // NS or OPERA alternative page to be redirected if not IE browser
// logics
if (!ie && !ff && !op && !ps)
	window.location.replace(errBrw);
if ((ie || ff || op || ps) && version < minVers)
	window.location.replace(errVer);
//window.alert("O seu Browser é o : "+whichBrowser+" v"+version);
//window.alert("O seu Browser é do tipo : "+navigator.userAgent);

// ******************************* FIRST VISITOR CHECKING
/*
Original by The JavaScript Source (http://javascript.internet.com)
Upgrade by op351.com (http://op351.com)
--- SCRIPT REMOVED TEMPORARILY ---
// define default page
var defaultPage = "http://op351.com/firstvisitor_pt.htm";	// default page in Portuguese
// define several contents to popup
var redirPage = new Array();
redirPage[0] = defaultPage;
redirPage[1] = "";
redirPage[2] = "";
redirPage[3] = "";
var redirpagePos = 0; // define if page selection is fixed or random ( a number from 0 to max. href position number; for random use -1 )
var arrayLen = redirPage.length; // total number of available pages to be redirected to
if (redirpagePos == -1) // randomize or fix which page
	var randPos = Math.round((arrayLen-1)*Math.random());
else
	var randPos = redirpagePos;
var firstvisitPage = redirPage[randPos]; // which page to redirect to
// type of pop-up window
var windowprops = "width=510,height=365,location=no,toolbar=no,menubar=no,scrollbars=no,resizable=no,screenX=60,left=60,screenY=30,top=30";
// cookie duration (nr of days while no popup exists after first visit)
var expDays = 30;
// cookie definition
function GetCookie (name) {  
	var arg = name + "=";  
	var alen = arg.length;  
	var clen = document.cookie.length;  
	var i = 0;  
	while (i < clen)
		{    
		var j = i + alen;    
		if (document.cookie.substring(i, j)==arg)      
			return getCookieVal (j);    
		i = document.cookie.indexOf(" ", i) + 1;    
		if (i==0)
			break;   
		}  
		return null;
	}
function SetCookie (name, value) {  
	var argv = SetCookie.arguments;  
	var argc = SetCookie.arguments.length;  
	var expires = (argc > 2) ? argv[2] : null;  
	var path = (argc > 3) ? argv[3] : null;  
	var domain = (argc > 4) ? argv[4] : null;  
	var secure = (argc > 5) ? argv[5] : false;  
	document.cookie = name + "=" + escape (value) + ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + ((path == null) ? "" : ("; path=" + path)) + ((domain == null) ? "" : ("; domain=" + domain)) + ((secure == true) ? "; secure" : "");
	}
function DeleteCookie (name) {  
	var exp = new Date();  
	exp.setTime (exp.getTime() - 1);  
	var cval = GetCookie (name);  
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
	}
var exp = new Date(); 
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));
function amt() {
	var op351 = GetCookie('op351')
	if(op351 == null)
		{
		SetCookie('op351','1')
		return 1
		}
	else
		{
		var newcount = parseInt(op351) + 1;
		DeleteCookie('op351')
		SetCookie('op351',newcount,exp)
		return op351
		}
	}
function getCookieVal(offset) {
	var endstr = document.cookie.indexOf (";", offset);
	if (endstr==-1)
		endstr = document.cookie.length;
	return unescape(document.cookie.substring(offset, endstr));
	}
//function checkCount() {
	var op351 = GetCookie('op351');
	if (op351==null)
		{
		op351=1;
		SetCookie('op351', op351, exp);
	//	window.location.replace(firstvisitPage);
		window.open(firstvisitPage, 'advpopup', windowprops);
		}
	else
		{
		op351++;
		SetCookie('op351', op351, exp);
		}
	//}
END OF REMOVE */
// ******************************* PULL-DOWN MENU TO SELECT OTHER PAGE AND GO THERE
var mainDir;	// directory where target files are located (type 0 if this is not needed)
var thisform;	//  form on the page where this directing function is located (given by order number)
function closeWin() {
	if (!document.layers)
		setTimeout('window.close()', 8000);
	}
function goThere(formNr,directory) {
	var mainDir = directory;
	var thisform = document.forms[formNr];
	if ((thisform.list.options[thisform.list.options.selectedIndex].value != "nolink") && (mainDir != 0))
		document.location.href = mainDir + thisform.list.options[thisform.list.options.selectedIndex].value;
	else if ((thisform.list.options[thisform.list.options.selectedIndex].value != "nolink") && (mainDir == 0))
		document.location.href = thisform.list.options[thisform.list.options.selectedIndex].value;
	closeWin();
	}
//******************************* CHECK FRAME OFF
/* OFF
var parentWin = "";
if (parent.frames.length==0 && window.location.protocol=="http:")
	{
	if (parentWin != "")
		window.location.replace(parentWin);
	else
		window.location.replace("http://op351.com");
	}
	*/
// ******************************* SET DEFAULT STATUS BAR TEXT
defaultStatus = "op351.com, Serviços Internet * Porto - PORTUGAL";
/* ******************************* PRINT THIS PAGE
if (window.print)
	var prinThis = '<form><input type="image" name="prinThis" id="prinThis" src="http://op351.com/images/printer02.gif" width="40" height="36" alt="Print" border="0" value="Print" onclick="javascript:window.print();"><br><font face="Verdana" size="1">Imprimir<br>esta<br>página</font></form>';
    */
// ******************************* OPEN USEFUL WINDOWS
var largura = screen.width;
var altura = screen.height;
var larguraDisp = screen.availWidth;
var alturaDisp = screen.availHeight;
function openUrl() {
	window.open('url','window_name','width='+larguraDisp+',height='+alturaDisp+',dependent=yes,directories=no,location=no,menubar=no,scrollbars=yes,status=no,toolbar=yes,resizable=yes,left=0,top=0,screenX=0,screenY=0');
	return false;
	} 
// ******************************* DEBUGGING
/*
window.alert(output);
*/