// $Id: scripts.js,v 1.1 2010/02/26 20:40:52 jkeisers Exp $
// Global JavaScripts

// rollover scripts

function newwin(targetUrl,width,height)
{
	var currentTime = new Date();
	var winId = currentTime.getHours()+currentTime.getMinutes()+currentTime.getSeconds();
	var win_params="width="+width+",height="+height+",status=no,scrollbars=yes,directories=no,location=no,menubar=yes,toolbar=no,resizable=yes,screenX=200,screenY=5,left=200,top=5";
	var win=window.open("", "popwin"+winId, win_params, true);
	win.location = targetUrl;
	var browser = navigator.appName;
	win.focus();
}


function license()
{ //v3.0
	window.open('/LicensePolicy.html', 'email_window', 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=512,height=400');
}

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];}
}

function checkSimpleSearch(field)
{
	// TK - check simple search form prior to submitting
	if (field.name == 'query') {
		if (field.value == 'Site') field.value = '';
		field.form['issue'].selectedIndex = 0;
	}
	else if (field.name == 'issue') {
		field.form['query'].value = 'Site';
	}
}

function searchSetup(theform)
{
	// Clear the 'query' field if a date is submitted
	if (theform.elements.length > 1) {
		pos = theform['issue'].selectedIndex;
		if (pos > 0) theform['query'].value = '';
	} else {
		pos = -1;
	}

	if (pos <= 0 && (theform['query'].value == 'Site' || theform['query'].value == '')) {
		alert('Please enter some search criteria first.');
		return false;
	} else {
		return true;
	}
}

////////////////////////////////////
// advanced search box

var as_inited = false;

function toggle_advsrch()
{
	var box = document.getElementById('advsrch');
	if (box.style.display=='none') {
		box.style.display = 'block';
		if (as_inited===false)
			g = new AjaxGet('/includes/advanced_search.php', 'advsrch', '<div align="center" style="margin-top:30px;">Initializing...</div>');
		as_inited = true;
	}
	else {
		box.style.display = 'none';
	}
}


////////////////////////////////////
// for copyright request
function request_page(data)
{
	requestWindow = window.open('/common/requestarticle.php?' + data, 'email_window', 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=540,height=425');
}

////////////////////////////////////
// image popup

function image_popup(file,width,height)
{
	var newHeight = Number(Number(height) + 20);
	var newWidth = Number(Number(width) + 20);
	imgWin = window.open('/common/imagepopup.php?img='+file+'&w='+width+'&h='+height, 'Image', 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width='+newWidth+',height='+newHeight);
	imgWin.moveTo(30,30);
	imgWin.focus();
}


////////////////////////////////////
// email popup

function email_page(data)
{
	emailWindow = window.open('/common/emailarticle.php?' + data, 'email_window', 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=512,height=430');
}

////////////////////////////////////
// printer-friendly version popup

function print_page(url)
{
	var opts = 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=536,height=500';
	printWindow = window.open(url, 'print_window', opts);
}

function checkEmailForm(theForm)
{
	var TO		= theForm.TO.value;
	var FROM	= theForm.FROM.value;
	//var BCC		= theForm.BCC.value;
	var regExp	= /[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,6})/; // email validator

	toValid =	TO.search(regExp);
	fromValid =	FROM.search(regExp);
	//bccValid =	BCC.search(regExp);

	if (TO == "") {
		theForm.TO.focus();
		alert("You must first enter the email address of the person \rto whom you would like to send this article.");
		return false;
	} else if (toValid == -1) {
		theForm.TO.focus();
		alert("You must first enter a valid email address in the \"To\" field.");
		return false;
	} else if (FROM == "") {
		theForm.FROM.focus();
		alert("You must first enter your email address in the \"Your Email Address\" field.");
		return false;
	} else if (fromValid == -1) {
		theForm.FROM.focus();
		alert("You must first enter a valid email address in the \"Your Email Address\" field.");
		return false;
	} //else if (BCC != "" && bccValid == -1) {
	//	theForm.BCC.focus();
	//	alert("You must first enter a valid email address in the \"Bcc\" field.");
	//	return false;
	//}
	return true;
}

////////////////////////////////////
// font-sizing

var isIE = (navigator.appName == 'Microsoft Internet Explorer');
var factor = 0;
var adj = 0;
var units = 4;

function setElement(obj, addl)
{
	var re = /^(a|b|i|em|strong|span|p)$/i;
	if (obj.style && ( obj.nodeType == 1 || obj.nodeType == 3 ) ) {
		if (re.test(obj.tagName) && obj.className!='header')
			return;
		if ( isIE )
			z = obj.currentStyle;
		else
			z = window.getComputedStyle(obj,null);
		newFsize = (parseInt(z.fontSize)+addl)+'px';
		obj.style.fontSize = newFsize;
		//obj.style.lineHeight = 'auto';
		for (var y=0; y<obj.childNodes.length; y++)
			setElement(obj.childNodes[y], addl); // recursive
	}
}

function changeSize(opt)
{
	var head = document.getElementById('storyheader');
	var block = document.getElementById('storybody');
	var addl = 0;

	if (opt>factor && factor<2) { // increase
		addl = (opt-factor)*units;
		factor = opt;
	}
	else if (opt<factor) { // decrease
		addl = ((factor-opt)*units)*-1;
		factor = opt;
	}
	else {
		return; // no change
	}
	setElement(head,addl);
	setElement(block,addl);
}


////////////////////////////////////
// Story Toolbox

var storytabs = [ '1','2','3','4','5' ];

function set_tabs(id)
{
	for (var i in storytabs) {
		if (storytabs[i]==id) {
			document.getElementById('tab'+storytabs[i]).className = 'current';
			document.getElementById('block'+storytabs[i]).style.display = 'block';
		}
		else {
			document.getElementById('tab'+storytabs[i]).className = 'NULL';
			document.getElementById('block'+storytabs[i]).style.display = 'none';
		}
	}
}

function process_email(theForm)
{
	checkEmailForm(theForm);
	callACAC('/common/emailarticle.php', getPOSTParams(theForm), 'block1', 'POST');
	emailref = true;
}

function get_tab(id)
{
	set_tabs(id);
	switch (id) {
		case '1': // email
			if (emailref == true) {
				callACAC('/common/emailarticle.php', 'data=' + emailvals, 'block1');
				emailref = false;
			}
			break;
		case '2':  // comments
			if (commref == true) {
				getCommentForm(rurl, iid);
				commref = false;
			}
			break;
		case '3': // print
			break; // just switch tab
		case '4': // reuse
			request_page('{emailmask}');
			break; // just switch tab
	}
}

////////////////////////////////////
// PowerNews Email Feature

function email_nl(emailvals)
{
	var b = document.getElementById('block1');
	b.style.border = '1px solid #E9E8E8';
	b.style.padding = '18px';
	callACAC('/common/emailarticle.php', 'data=' + emailvals, 'block1');
	emailref = false;
}

////////////////////////////////////
// Ajax Functions

function XHR()
{
	try {
		obj = new XMLHttpRequest(); /* e.g. Firefox */
	} catch(e) {
		try {
			obj = new ActiveXObject("Msxml2.XMLHTTP");  /* some versions IE */
		} catch (e) {
			try {
				obj = new ActiveXObject("Microsoft.XMLHTTP");  /* some versions IE */
			} catch (E) {
				obj = false;
			}
		}
	}
	return obj;
}

function SetDiv(obj)
{
	if(obj.req.readyState == 4) {
		if(obj.req.status == 200) {
			obj.div.innerHTML = obj.req.responseText;
		} else {
			if (err_msg)
				obj.div.innerHTML = err_msg+"\n"+obj.req.responseText;
		}
	}
}

function AlertResult(obj)
{
	if(obj.req.readyState == 4)
		if (obj.req.status == 200)
			alert(obj.req.responseText); // what to do as a result
}

function AjaxGet(urlstr, div)
{
	this.div = document.getElementById(div);
	if (arguments[2])
		this.div.innerHTML = arguments[2];
	this.req = XHR(); // OK
	this.req.open('GET', urlstr, true);
	var obj = this;
	this.req.onreadystatechange = function() { SetDiv(obj); };
	this.req.send(null);
}

function AjaxFetch(urlstr, funcname)
{
	this.req = XHR(); // OK
	this.req.open('GET', urlstr, true);
	var obj = this;
	eval('var func = '+funcname+';');
	this.req.onreadystatechange = function() { func(obj); };
	this.req.send(null);
}

function AjaxPost(urlstr, params, div)
{
	this.div = document.getElementById(div);
	this.req = XHR(); // OK
	this.req.open('POST', urlstr, true);
	var obj = this;
	this.div.innerHTML = ' ';
	this.req.onreadystatechange = function() { SetDiv(obj); };
	this.req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	this.req.setRequestHeader("Content-length", params.length);
	this.req.setRequestHeader("Connection", "close");
	this.req.send(params);
}


function get_latest(key, type)
{
	AjaxPost('/lateststories.php', 'ajax=1&key=' + key + '&type=' + type, 'latestStoriesBlock');
}

////////////////////////////////////
// Target for iLinks
/*
function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("class") == "iLinks")
     anchor.target = "_blank";
 }
}
window.onload = externalLinks;
*/
//////////////

var getElementsByClassName = function (className, tag, elm){
            if (document.getElementsByClassName) {
                        getElementsByClassName = function (className, tag, elm) {
                                    elm = elm || document;
                                    var elements = elm.getElementsByClassName(className),
                                                nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
                                                returnElements = [],
                                                current;
                                    for(var i=0, il=elements.length; i<il; i+=1){
                                                current = elements[i];
                                                if(!nodeName || nodeName.test(current.nodeName)) {
                                                            returnElements.push(current);
                                                }
                                    }
                                    return returnElements;
                        };
            }
            else if (document.evaluate) {
                        getElementsByClassName = function (className, tag, elm) {
                                    tag = tag || "*";
                                    elm = elm || document;
                                    var classes = className.split(" "),
                                                classesToCheck = "",
                                                xhtmlNamespace = "http://www.w3.org/1999/xhtml",
                                                namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
                                                returnElements = [],
                                                elements,
                                                node;
                                    for(var j=0, jl=classes.length; j<jl; j+=1){
                                                classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
                                    }
                                    try        {
                                                elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
                                    }
                                    catch (e) {
                                                elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
                                    }
                                    while ((node = elements.iterateNext())) {
                                                returnElements.push(node);
                                    }
                                    return returnElements;
                        };
            }
            else {
                        getElementsByClassName = function (className, tag, elm) {
                                    tag = tag || "*";
                                    elm = elm || document;
                                    var classes = className.split(" "),
                                                classesToCheck = [],
                                                elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
                                                current,
                                                returnElements = [],
                                                match;
                                    for(var k=0, kl=classes.length; k<kl; k+=1){
                                                classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
                                    }
                                    for(var l=0, ll=elements.length; l<ll; l+=1){
                                                current = elements[l];
                                                match = false;
                                                for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
                                                            match = classesToCheck[m].test(current.className);
                                                            if (!match) {
                                                                        break;
                                                            }
                                                }
                                                if (match) {
                                                            returnElements.push(current);
                                                }
                                    }
                                    return returnElements;
                        };
            }
            return getElementsByClassName(className, tag, elm);
};


function externalLinks() {
 if (!document.getElementsByTagName)
 {
             alert('getElementsByTagName');
             return;
 };

 var anchors = getElementsByClassName("iLinks", "a")
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("class") == "iLinks")
     anchor.target = "_blank";
 }
}

window.onload = externalLinks;


// Story Clean-Up functions

function story_tidy()
{
	var obj = document.getElementById('storyBody');
	check_element(obj);
}

function check_element(obj)
{
	for (var j=0; j<obj.childNodes.length; j++) {
		if (obj.childNodes[j].tagName=='IMG')
			size_image_div(obj.childNodes[j]);
		if (obj.childNodes[j].childNodes.length > 0)
			check_element(obj.childNodes[j]);
	}
}

function size_image_div(obj,w)
{
	var par = obj.parentNode;
	if (par.tagName=='A')
		par = par.parentNode;
	if (par.tagName!='DIV' || par.id=='storyBody')
		return;
	par.style.width = obj.width +'px';
}