/**
 * POPUP WINDOW CODE v1.1.2
 * Used for displaying DHTML only popups instead of using buggy modal windows.
 *
 * By Seth Banks (webmaster at subimage dot com)
 * http://www.subimage.com/
 *
 * Contributions by Eric Angel (tab index code) and Scott (hiding/showing selects for IE users)
 *
 * Up to date code can be found at http://www.subimage.com/dhtml/subModal
 *
 * This code is free for you to use anywhere, just keep this comment block.
 */

// Popup code
var gPopupMask = null;
var gPopupContainer = null;
var gPopFrame = null;
var gReturnFunc;
var gPopupIsShown = false;
var gTopo = 0;
var gHideSelects = false;


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() {
        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;
        }
}
addEvent(window, "load", initPopUp);

 /**
        * @argument url     - url to display
        * @argument titulo  - titulo da PopUp
        * @argument tipo    - forma de exibicao e = especial (tamanho pre-definido), c = comum (tela cheia)
        * @argument width   - int in pixels
        * @argument height  - int in pixels
		* @argument postop  - posi??o top inicial de exibicao. 0 = autom?tico
		* @argument posleft - posi??o left inicial de exibicao. 0 = autom?tico
        * @argument returnFunc - function to call when returning true from the window.
        */

function showPopWin(url, titulo, tipo, width, height, postop, posleft, returnFunc) {
        gPopupIsShown = true;
        disableTabIndexes();
        gPopupMask.style.display = "block";
        gPopupContainer.style.display = "block";
        // calculate where to place the window on screen
        centerPopWin(tipo, width, height, postop, posleft);

        var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);
        var fullHeight = getViewportHeight();
        var fullWidth = getViewportWidth();

		if (tipo == 'c')
		    {
		     gPopupContainer.style.width = (fullWidth - 10) + "px";
		     gPopupContainer.style.height = (fullHeight - (15 + titleBarHeight)) + "px";
		     if (postop != 0)
		         {
		          gTopo = postop;
		         }
		    }
		else
		    {
        	 gPopupContainer.style.width = width + "px";
        	 gPopupContainer.style.height = (height+titleBarHeight) + "px";
        	}

        // 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";
		if (tipo == 'c')
		    {
        	 gPopFrame.style.height = (fullHeight - (15 + titleBarHeight)) + "px";
        	}
        else
            {
             gPopFrame.style.height = (height - titleBarHeight) + "px";
            }
        // set the url
        gPopFrame.src = url;

        gReturnFunc = returnFunc;
        // for IE
        if (gHideSelects == true) {
                hideSelectBoxes();
        }
    document.getElementById("popupTitle").innerHTML = titulo;
}

//
var gi = 0;
function centerPopWin(tipo, width, height, postop, posleft) {
        if (gPopupIsShown == true) {
                var fullHeight = getViewportHeight();
                var fullWidth = getViewportWidth();

                var theBody = document.documentElement;

                var scTop = parseInt(theBody.scrollTop,10);
                var scLeft = parseInt(theBody.scrollLeft,10);

                gPopupMask.style.height = fullHeight + "px";
                gPopupMask.style.width = fullWidth + "px";
                gPopupMask.style.top = 0 + "px";
                gPopupMask.style.left = 0 + "px";

                var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);
                if (tipo == 'c')
                    {
                     gPopupContainer.style.top = 5 + "px";
                     gPopupContainer.style.left = 5 + "px";
                    }
                else
                    {
					 if (postop == 0)
					     {
					      gPopupContainer.style.top = ((fullHeight - height) / 2) + "px";
					     }
					 else
					     {
                     	  gPopupContainer.style.top  = postop + "px";
                     	 }
					 if (posleft == 0)
					     {
					      gPopupContainer.style.left = ((fullWidth - width) / 2) + "px";
					     }
					 else
					     {
                     	  gPopupContainer.style.left  = posleft + "px";
                     	 }
                    }
               // alert(fullWidth + " " + width + " " + gPopupContainer.style.left);
        }
}
//addEvent(window, "resize", centerPopWin);
//addEvent(window, "scroll", centerPopWin);
//window.onscroll = centerPopWin(width, height, tipo, top, left);

/**
 * @argument callReturnFunc - bool - determines if we call the return function specified
 * @argument returnVal - anything - return value
 */
function hidePopWin(callReturnFunc) {
        gPopupIsShown = false;
        restoreTabIndexes();
        if (gPopupMask == null) {
                return;
        }
        gPopupMask.style.display = "none";
        gPopupContainer.style.display = "none";
        if (callReturnFunc == true && gReturnFunc != null) {
                gReturnFunc(window.frames["popupFrame"].returnVal);
        }
        gPopFrame.src = '';
        // display all select boxes
        if (gHideSelects == true) {
                displaySelectBoxes();
        }
        if (gTopo != 0)
            {
             window.scrollTo(0, gTopo);
            }
}

// 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() {
        for(var i = 0; i < document.forms.length; i++) {
                for(var e = 0; e < document.forms[i].length; e++){
                        if(document.forms[i].elements[e].tagName == "SELECT") {
                                document.forms[i].elements[e].style.visibility="hidden";
                        }
                        if(document.forms[i].elements[e].type == "select-one") {
                        document.forms[i].elements[e].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 wanted select form tags to always be the topmost z-index or layer
*/
function displaySelectBoxes() {
        for(var i = 0; i < document.forms.length; i++) {
                for(var e = 0; e < document.forms[i].length; e++){
                        if(document.forms[i].elements[e].tagName == "SELECT") {
                        document.forms[i].elements[e].style.visibility="visible";
                        }
                        if(document.forms[i].elements[e].type == "select-one") {
                        document.forms[i].elements[e].style.visibility="visible";
                        }
                }
        }
}