/**
 * submodal v1.6
 * used for displaying dhtml only popups instead of using buggy modal windows.
 *
 * by subimage llc
 * http://www.subimage.com
 *
 * contributions by:
 * 	eric angel - tab index code
 * 	scott - hiding/showing selects for ie users
 *	todd huss - inserting modal dynamically and anchor classes
 *
 * up to date code can be found at http://submodal.googlecode.com
 */

// popup code
var gpopupmask = null;
var gpopupcontainer = null;
var gpopframe = null;
var greturnfunc;
var gpopupisshown = false;
var gdefaultpage = "";
var ghideselects = false;
var greturnval = null;

var gtabindexes = new array();
// pre-defined list of tags we want to disable/enable tabbing into
var gtabbabletags = new array("a","button","textarea","input","iframe");	

// if using mozilla or firefox, use tab-key trap.
if (!document.all) {
	document.onkeypress = keydownhandler;
}

/**
 * initializes popup code on load.	
 */
function initpopup() {
	// add the html to the body
	thebody = document.getelementsbytagname('body')[0];
	popmask = document.createelement('div');
	popmask.id = 'popupmask';
	popcont = document.createelement('div');
	popcont.id = 'popupcontainer';
	popcont.innerhtml = '' +
		'<div id="popupinnerlogin1">' +
			'<div id="popuptitlebar">' +
				'<div id="popuptitle"></div>' +
				'<div id="popupcontrols" class="popclosebox1">' +
					'<img src="wzmap/136.jpg" onclick="hidepopwin(false);" id="popclosebox1" />' +
				'</div>' +
			'</div>' +
			'<iframe src="'+ gdefaultpage +'" style="width:100%;height:100%;background-color:transparent;" scrolling="no" frameborder="0" allowtransparency="true" id="popupframe" name="popupframe" width="100%" height="100%"></iframe>' +
		'</div>';
	thebody.appendchild(popmask);
	thebody.appendchild(popcont);
	
	gpopupmask = document.getelementbyid("popupmask");
	gpopupcontainer = document.getelementbyid("popupcontainer");
	gpopframe = document.getelementbyid("popupframe");	
	
	// check to see if this is ie version 6 or lower. hide select boxes if so
	// maybe they'll fix this in version 7?
	var brsversion = parseint(window.navigator.appversion.charat(0), 10);
	if (brsversion <= 6 && window.navigator.useragent.indexof("msie") > -1) {
		ghideselects = true;
	}
	
	// add onclick handlers to 'a' elements of class submodal or submodal-width-height
	var elms = document.getelementsbytagname('a');
	for (i = 0; i < elms.length; i++) {
		if (elms[i].classname.indexof("submodal") == 0) { 
			// var onclick = 'function (){showpopwin(\''+elms[i].href+'\','+width+', '+height+', null);return false;};';
			// elms[i].onclick = eval(onclick);
			elms[i].onclick = function(){
				// default width and height
				var width = 830;
				var height = 500;
				// parse out optional width and height from classname
				params = this.classname.split('-');
				if (params.length == 3) {
					width = parseint(params[1]);
					height = parseint(params[2]);
				}
				showpopwin(this.href,width,height,null); return false;
			}
		}
	}
}
addevent(window, "load", initpopup);

 /**
	* @argument width - int in pixels
	* @argument height - int in pixels
	* @argument url - url to display
	* @argument returnfunc - function to call when returning true from the window.
	* @argument showclosebox - show the close box - default true
	*/
function showpopwin(url, width, height, returnfunc, showclosebox) {
	// show or hide the window close widget
	if (showclosebox == null || showclosebox == true) {
		document.getelementbyid("popclosebox1").style.display = "block";
	} else {
		document.getelementbyid("popclosebox1").style.display = "none";
	}
	gpopupisshown = true;
	disabletabindexes();
	gpopupmask.style.display = "block";
	gpopupcontainer.style.display = "block";
	// calculate where to place the window on screen
	centerpopwin(width, height);
	
	var titlebarheight = parseint(document.getelementbyid("popuptitlebar").offsetheight, 10);


	gpopupcontainer.style.width = width + "px";
	gpopupcontainer.style.height = (height+titlebarheight) + "px";
	
	setmasksize();

	// need to set the width of the iframe to the title bar width because of the dropshadow
	// some oddness was occuring and causing the frame to poke outside the border in ie6
	gpopframe.style.width = parseint(document.getelementbyid("popuptitlebar").offsetwidth, 10) + "px";
	gpopframe.style.height = (height) + "px";
	
	// set the url
	
	gpopframe.src = url;
	
	greturnfunc = returnfunc;
	// for ie
	if (ghideselects == true) {
		hideselectboxes();
	}
	
	window.settimeout("setpoptitle();", 600);
}

//
var gi = 0;
function centerpopwin(width, height) {
	if (gpopupisshown == true) {
		if (width == null || isnan(width)) {
			width = gpopupcontainer.offsetwidth;
		}
		if (height == null) {
			height = gpopupcontainer.offsetheight;
		}
		
		//var thebody = document.documentelement;
		var thebody = document.getelementsbytagname("body")[0];
		//thebody.style.overflow = "hidden";
		var sctop = parseint(getscrolltop(),10);
		var scleft = parseint(thebody.scrollleft,10);
	
		setmasksize();
		
		//window.status = gpopupmask.style.top + " " + gpopupmask.style.left + " " + gi++;
		
		var titlebarheight = parseint(document.getelementbyid("popuptitlebar").offsetheight, 10);
		
		var fullheight = getviewportheight();
		var fullwidth = getviewportwidth();
		
		gpopupcontainer.style.top = (sctop + ((fullheight - (height+titlebarheight)) / 2)) + "px";
		gpopupcontainer.style.left =  (scleft + ((fullwidth - width) / 2)) + "px";
		//alert(fullwidth + " " + width + " " + gpopupcontainer.style.left);
	}
}
addevent(window, "resize", centerpopwin);
addevent(window, "scroll", centerpopwin);
window.onscroll = centerpopwin;


/**
 * sets the size of the popup mask.
 *
 */
function setmasksize() {
	var thebody = document.getelementsbytagname("body")[0];
			
	var fullheight = getviewportheight();
	var fullwidth = getviewportwidth();
	
	// determine what's bigger, scrollheight or fullheight / width
	if (fullheight > thebody.scrollheight) {
		popheight = fullheight;
	} else {
		popheight = thebody.scrollheight;
	}
	
	if (fullwidth > thebody.scrollwidth) {
		popwidth = fullwidth;
	} else {
		popwidth = thebody.scrollwidth;
	}
	
	gpopupmask.style.height = popheight + "px";
	gpopupmask.style.width = popwidth + "px";
}

/**
 * @argument callreturnfunc - bool - determines if we call the return function specified
 * @argument returnval - anything - return value 
 */
function hidepopwin(callreturnfunc) {
	gpopupisshown = false;
	var thebody = document.getelementsbytagname("body")[0];
	thebody.style.overflow = "";
	restoretabindexes();
	if (gpopupmask == null) {
		return;
	}
	gpopupmask.style.display = "none";
	gpopupcontainer.style.display = "none";
	if (callreturnfunc == true && greturnfunc != null) {
		// set the return code to run in a timeout.
		// was having issues using with an ajax.request();
		greturnval = window.frames["popupframe"].returnval;
		window.settimeout('greturnfunc(greturnval);', 1);
	}
	gpopframe.src = gdefaultpage;
	// display all select boxes
	if (ghideselects == true) {
		displayselectboxes();
	}
}

/**
 * sets the popup title based on the title of the html document it contains.
 * uses a timeout to keep checking until the title is valid.
 */
function setpoptitle() {
	return;
	if (window.frames["popupframe"].document.title == null) {
		window.settimeout("setpoptitle();", 10);
	} else {
		document.getelementbyid("popuptitle").innerhtml = window.frames["popupframe"].document.title;
	}
}

// tab key trap. iff popup is shown and key was [tab], suppress it.
// @argument e - event - keyboard event that caused this function to be called.
function keydownhandler(e) {
    if (gpopupisshown && e.keycode == 9)  return false;
}

// for ie.  go through predefined tags and disable tabbing into them.
function disabletabindexes() {
	if (document.all) {
		var i = 0;
		for (var j = 0; j < gtabbabletags.length; j++) {
			var tagelements = document.getelementsbytagname(gtabbabletags[j]);
			for (var k = 0 ; k < tagelements.length; k++) {
				gtabindexes[i] = tagelements[k].tabindex;
				tagelements[k].tabindex="-1";
				i++;
			}
		}
	}
}

// for ie. restore tab-indexes.
function restoretabindexes() {
	if (document.all) {
		var i = 0;
		for (var j = 0; j < gtabbabletags.length; j++) {
			var tagelements = document.getelementsbytagname(gtabbabletags[j]);
			for (var k = 0 ; k < tagelements.length; k++) {
				tagelements[k].tabindex = gtabindexes[i];
				tagelements[k].tabenabled = true;
				i++;
			}
		}
	}
}


/**
 * hides all drop down form select boxes on the screen so they do not appear above the mask layer.
 * ie has a problem with wanted select form tags to always be the topmost z-index or layer
 *
 * thanks for the code scott!
 */
function hideselectboxes() {
  var x = document.getelementsbytagname("select");

  for (i=0;x && i < x.length; i++) {
    x[i].style.visibility = "hidden";
  }
}

/**
 * makes all drop down form select boxes on the screen visible so they do not 
 * reappear after the dialog is closed.
 * 
 * ie has a problem with wanting select form tags to always be the 
 * topmost z-index or layer.
 */
function displayselectboxes() {
  var x = document.getelementsbytagname("select");

  for (i=0;x && i < x.length; i++){
    x[i].style.visibility = "visible";
  }
}