/*-----------------------------------------------------------------------------------
	General [Global] Functions
-----------------------------------------------------------------------------------*/

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

window.onload = function() {
	MM_preloadImages('images/header_forums_on.gif','images/header_store_on.gif','images/header_channels_on.gif','images/header_create_on.gif','images/header_about_on.gif','images/header_ads_on.gif');
}


/*-----------------------------------------------------------------------------------
	JS+Flash sitting in a tree...
-----------------------------------------------------------------------------------*/

function thisMovie(movieName) {
    if (navigator.appName.indexOf("Microsoft") != -1) {
        return window[movieName]
    }
    else {
        return document[movieName]
    }
}

function showUpload(channelId, userId) {
	var params;
	var channel = null;
	var user = null;
	channel = channelId;
	user = userId;
	
	if (channel && user) {
		params = '?channel='+ channel +'&user='+ user;	
	} else if (channel) {
		params = '?channel='+ channel;
	} else {
		params = '';
	}
	
	var upload = window.open('http://www1.powertvonline.com/upload/'+ params, 'PowerTV Upload', 'height=665,width=965,resizeable=no,menubar=no,scrollbars=no,status=no,titlebar=no,toolbar=no');
	if (window.focus) { upload.focus()}
	return false;
}

/* <a href="/upload/" onclick="return showUpload()">Link to popup</a> */

/*-----------------------------------------------------------------------------------
	Ajax & Ads
-----------------------------------------------------------------------------------*/

var xmlHttp = xmlHttp();

var timerId = null;
var timerSeconds = 30;
var timerRunning = false;

function xmlHttp() {
	var xmlHttp;

	// Firefox, Safari, Etc
	if (window.XMLHttpRequest) {
		xmlHttp = new XMLHttpRequest();
		
		if (xmlHttp.overrideMimeType) {
			xmlHttp.overrideMimeType('text/xml');
		}
		
	// Internet Explorer
	} else if (window.ActiveXObject) {
		try {
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	
	// If its set, go go
	if (!xmlHttp) {
		alert("Giving up :( Cannot create an XMLHTTP instance!");
		return false;
	} else {
		return xmlHttp;
	}
}

function xmlHttpStatus() {
	if (xmlHttp.readyState == 4) {
		if (xmlHttp.status == 200) {
			try {
				return true;
			} catch (e) {
				alert("There were problems handling the request: \n"+ e.toString() +"\n"+ xmlHttp.statusText);
			}
		}
	}
}

function initAds(div, cId) {
	stopAds();
	startAds(div, cId);
}

function stopAds() {
	if (timerRunning) {
		clearTimeout(timerID);
		timerRunning = false;
		timerSeconds = 30;
	}
}
		
function startAds(div, cId) {
	if (timerSeconds == 0) {
		// Stop timer and restart
		stopAds();
		startAds(div, cId);
		
		// Now fire off ajax
		if (xmlHttp) {
			try {
				xmlHttp.open("GET", "library/gather.php?page=channelAds&channelId="+ cId, true);
				xmlHttp.onreadystatechange = showAds();
				xmlHttp.send(null);
			} catch (e) {
				alert("Error in loading advertisement!");
			}
		}
		
    } else {
		timerSeconds = timerSeconds - 1;
        timerRunning = true;
        timerID = self.setTimeout("startAds('"+ div +"', "+ cId +")", 1000);
    }
}

function showAds() {
	if (xmlHttpStatus) {
		div = document.getElementById('siteAds');
		div.innerHTML = "";
		div.innerHTML = xmlHttp.responseText;
	}
}





/*********** EI *********/
// Get SWF
function getSWF(movieName) {
    if (navigator.appName.indexOf("Microsoft") != -1) {
        return window[movieName];
    } else {
        return document[movieName];
    }
}


function sendToSWF (swfID, action, message) {
	thisMovie(swfID).sendToSWF(action, message);
}

function receivedFromSWF (txt) {
	alert(txt);
	return;
}

function thisMovie(movieName) {
    if (navigator.appName.indexOf("Microsoft") != -1) {
        return window[movieName]
    }
    else {
        return document[movieName]
    }
}