/* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * collective initialization routines
 * -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */

window.onload = function() {	
	soopaRolloverSetup();
	loadStyle();
}


/* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * easiest rollovers on earth
 * see www.youngpup.net for documentation.
 *
 * altered by nate cook for xhtml compliance
 * -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */

function soopaRolloverSetup() {
	if (document.getElementsByTagName == null) return;

	var img, sh, sn, sd, cl;
	
	for (var i = 0; (img = document.images[i]); i++) {
		if (img.className == "roll") {
			img.n = new Image();
			img.n.src = img.src;

			img.h = new Image();
			img.h.src = img.src.substring(0,img.src.length - 4) + "_o.gif";
			img.onmouseover = soopaSwapOn;
			img.onmouseout  = soopaSwapOff;
		}
	}
}

function soopaSwapOn() {
	this.src = this.h.src;
}

function soopaSwapOff() {
	this.src  = this.n.src;
}

function soopaSwapDown() {
	this.src  = this.d.src;
	this.temp = typeof(document.onmouseup) != 'undefined' && typeof(document.onmouseup) != 'unknown' ? document.onmouseup : "";
	soopaSwapUp.img = this;
	document.onmouseup = soopaSwapUp;
}

function soopaSwapUp() {
	var ths = soopaSwapUp.img;
	ths.src = ths.n.src;
	if (ths.temp) document.onmouseup = ths.temp;
}

/* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * style switcher functions written by Paul Sowden
 * details @ ALA: http://www.alistapart.com/stories/alternate/
 * -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */

var largerText = false;
 
function toggleText(linkObj) {
	if (! largerText) {
		largerText = true;
		if (linkObj)

			linkObj.innerHTML = 'shrink type';
		createCookie('style', 'larger', 365);
		setActiveStyleSheet('Larger text');
	} else {
		largerText = false;
		if (linkObj)
			linkObj.innerHTML = 'enlarge type';
		createCookie('style', 'normal', 365);
		setActiveStyleSheet('');
	}
}

function setActiveStyleSheet(title) {
	if (! document.getElementsByTagName) return;
	
	var i, a, main;
	for(i=0; (a = document.getElementsByTagName('link')[i]); i++) {
		if(a.getAttribute('rel').indexOf('style') != -1 && a.getAttribute('title')) {
			a.disabled = true;
			if (a.getAttribute('title') == title) a.disabled = false;
		}
		// alert(a.getAttribute('title') + ': ' + a.disabled);
	}
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = '; expires='+date.toGMTString();
	}
	else expires = '';
	document.cookie = name+'='+value+expires+'; path=/';
}

function readCookie(name) {
	var nameEQ = name + '=';
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function loadStyle(e) {
	var cookie = readCookie("style");

	if (cookie == 'larger') {
		if (document.getElementById) {
			if (document.getElementById('toggleTextLink') != null) {
				if (! largerText) {
					toggleText(document.getElementById('toggleTextLink'));
				} else {
					document.getElementById('toggleTextLink').innerHTML = "shrink type"
				}
			}
		}
	}
}

function emailPage(){
   var loc =  top.location;
   var to = '';
   var subject = top.document.title;
  
   var body = 'Look at this page that I found on AirTran Airways\' website:\r\r';   

  	// BUILD MAIL MESSAGE COMPONENTS 
  	var doc = "mailto:" + to +  
    	"?subject=" + escape(subject) + 
    	"&body=" + escape(body) + escape(loc); 

  	// POP UP EMAIL MESSAGE WINDOW
  	window.location = doc;
}

var cookie = readCookie("style");
if (cookie == 'larger') {
	toggleText();
}


var popwin = null;
function popupWin(url, size) {
	if (! size)
		size = 'width=420,height=450';
	var props = size + ',scrollbars=yes,resizable=yes,menubar=no,toobar=no,location=no,directories=no,status=no';
	
	if ((popwin != null) && (! popwin.closed)) {
		popwin.location.href = url;
	} else {
		popwin = window.open(url,'info',props);
		popwin.opener = window;
	}
	popwin.focus();
}

function openAd(url, w,h)	{
	window.open(url, 'ads', 'toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizable=yes, width= '+w+', height='+h+' ');
}

function printPage(url, w,h)	{
	window.open(url, 'webpage', 'toolbar=no,menubar=yes,location=no,directories=no,status=no,scrollbars=yes,resizable=yes, width= '+w+', height='+h+' ');
}

var minKeyCode = '0'.charCodeAt(0);
function autoTab(keyCode, curField, nextName, maxChars) {
	if (keyCode < minKeyCode) return;
	
	var nextField = curField.form[nextName];
	if (curField.value.length >= maxChars) {
		nextField.focus();
		nextField.select();
	}
}

function qsParam(name) {
    var qsParams = window.location.search.substring(1).split('&');
    for (var i = 0; i < qsParams.length; i++) {
        if ((qsParams[i].indexOf(name) == 0) && (qsParams[i].indexOf('=') != -1)) {
            return (qsParams[i].substring(qsParams[i].indexOf('=') + 1));
        }
    }
    return '';
}