/*** PACKAGE FUNCTIONS ***/ 
// popup windows of classic.tpl ( zooms + interactives ) 
// <a href="#" onClick="return allZooms('url.html','ZoomWindow');"> - link - </a>
// width=500 + scroll=0 -OR- width=516 + scroll=1 -AND- height=550 or height=500
function allZooms (url,name,width,height,scroll) {
	var options = "width=" + width + ",height=" + height + ",status=0,toolbar=0,menubar=0,location=0,scrollbars=" + scroll + ",resizable=0";
	var pup = window.open(url,name,options);
	pup.focus();
	return false;
}

// popups (s=scrollbars)
function winPop(url,w,h,s) {
	if (s == "") { s = "0"; }
	var winleft = (screen.width - w) / 2;
	var wintop = (screen.height - h) / 2;
   var agent,windowName,params
		agent = navigator.userAgent;
		windowName = "popup";
		params  = "'";
		params += "toolbar=0,";
		params += "location=0,";
		params += "directories=0,";
		params += "status=0,";
		params += "menubar=0,";
		params += "scrollbars=" + s + ",";
		params += "resizable=0,";
		params += "left=" + winleft + ",top=" + wintop + ",";
		params += "width="+w+",";
		params += "height="+h+"'";


  var pup = window.open(url,windowName,params);

    if (agent.indexOf("Mozilla/2") != -1 && agent.indexOf("Win") == -1) pup = window.open(url, windowName , params)
    if (!pup.opener) pup.opener = window
	 pup.focus();
	return false;
}

function openNewWindow(url,name,options) {
    window.open(url,name,options);
}


/* ----------------------------------------------------------------------------------------------------------------------- */


// image rollovers ( prev / next )
// <a . onMouseOver="switchOn('n_')" onMouseOut="switchOff('n_')"> <img src="/sgallery/_off.gif" ... name="n_"> </a>
// _ = number refering to image associated
if (document.images) {   
		n1On = new Image(50,10);
		n1On.src = "/sgallery/prevon.gif";
		n1Off = new Image(50,10);
		n1Off.src = "/sgallery/prevoff.gif";

		n2On = new Image(50,10);
		n2On.src = "/sgallery/nexton.gif";
		n2Off = new Image(50,10);
		n2Off.src = "/sgallery/nextoff.gif";
		
		n3On = new Image(50,10);
		n3On.src = "/sgallery/prevon.gif";
		n3Off = new Image(50,10);
		n3Off.src = "/sgallery/prevoff.gif";

		n4On = new Image(50,10);
		n4On.src = "/sgallery/nexton.gif";
		n4Off = new Image(50,10);
		n4Off.src = "/sgallery/nextoff.gif";

}

function switchOn(imgName) {
    if (document.images) { 
        imgOn = eval(imgName + "On.src");
        document [imgName].src = imgOn;
        }
}

function switchOff(imgName) {
   if (document.images) { 
        imgOff = eval(imgName + "Off.src");
        document [imgName].src = imgOff;
        }
}


/* ----------------------------------------------------------------------------------------------------------------------- */


// auto goto url via pulldown
// <form name="linkForm"> <select onChange="navigateTo(this);"> <option value="relative|absolute url"> - link - </select> </form>
function navigateTo(s) { 
	var url = s.options[s.selectedIndex].value;
	if (url) window.top.location.href = url;
	return false;
}

function navDie(s) {
	var url = s.options[s.selectedIndex].value;
	if (url) { 
		opener.location.href = url; 
		window.close();
	}
	return false;
}


// printer friendly font size change function
function changeFont (s, k) {
	var size = k + "px";
	if (document.getElementById) { document.getElementById(s).style.fontSize = size; }
	else { document.ids.typeface.fontSize = size; }
}

// links from popup to parent browser
// <a href="#" onClick="quickLink('url.html');"> - link - </a>
function popLink(url) {
    opener.location.href = url; 
    window.close();
}


// pulls values from url
function getParam(paramName,pos) {
	var startPos = (pos) ? pos : 0;
	var url,paramBegin,paramEnd,valueBegin,paramValue
	url = window.location.search;
	paramBegin = url.indexOf(paramName,startPos);

	if (paramBegin == -1) return false
	paramEnd = paramBegin + paramName.length;
	param = url.substring(paramBegin,paramEnd);
	
	var valBegin = url.indexOf("=",paramEnd);
	var nextParam = url.indexOf("&",paramEnd);
	var valLen = (nextParam == -1) ? (url.length-(valBegin)) : (nextParam-valBegin);
	var valEnd = (nextParam == -1) ? valBegin+valLen : nextParam;

    valueBegin = paramEnd + 1
    paramValue = url.substring(valueBegin, valEnd)

	if ( (nextParam != -1) && (valBegin > nextParam) ) return getParam(param,paramEnd);
	else {

		 for (i = 0; i < paramValue.length; i++) {
			 paramValue = paramValue.replace("+", " ");
			 paramValue = paramValue.replace("%26", "&");
			 paramValue = paramValue.replace("%27", "'");
			 paramValue = paramValue.replace("%28", "(");
			 paramValue = paramValue.replace("%29", ")");
		}

    return paramValue
	}
}

function setKookie(name,val,exp) {
	var Kval = val + "|";
	Kval = escape(Kval);

	var kookie = name+"="+Kval+
		"; domain=.discovery.com; path=/;"
	if (exp) kookie += " expires="+exp
	document.cookie = kookie
}

function getKookie(name) {
	var nameStr = name + "=";
	var maxLen = document.cookie.length
	var i = 0
	while (i < maxLen) {
		var j = i + nameStr.length
		if (document.cookie.substring(i,j) == nameStr) {
			var cookieEnd = document.cookie.indexOf(";",j);
			if (cookieEnd == -1) {
				cookieEnd = document.cookie.length;
			}
		return unescape(document.cookie.substring(j,cookieEnd));
		}
	i++
	}
	return false;
}


function userName() {
	var name = "";
	var cookie = getKookie('dcol_user');
	if (cookie) {
		values = cookie.split ("|");
		name = values[2];
	} else {
		name = "Guest";
	}
	return(name);
}

/* END PACKAGE FUNCTIONS */