/**
 * COMMON DHTML FUNCTIONS
 * These are handy functions I use all the time.
 *
 * By Seth Banks (webmaster at subimage dot com)
 * http://www.subimage.com/
 *
 * Up to date code can be found at http://www.subimage.com/dhtml/
 *
 * This code is free for you to use anywhere, just keep this comment block.
 */
function addEvent(obj, evType, fn){
 if (obj.addEventListener){
    obj.addEventListener(evType, fn, true);
    return true;
 } else if (obj.attachEvent){
    var r = obj.attachEvent("on"+evType, fn);
    return r;
 } else {
    return false;
 }
}
function removeEvent(obj, evType, fn, useCapture){
  if (obj.removeEventListener){
    obj.removeEventListener(evType, fn, useCapture);
    return true;
  } else if (obj.detachEvent){
    var r = obj.detachEvent("on"+evType, fn);
    return r;
  } else {
    alert("Handler could not be removed");
  }
}

/*
function getViewportHeight() {
	if (window.innerHeight!=window.undefined) return window.innerHeight;
	if (document.compatMode=='CSS1Compat') return document.documentElement.clientHeight;
	if (document.body) return document.body.clientHeight; 
	return window.undefined; 
}
function getViewportWidth() {
	if (window.innerWidth!=window.undefined) return window.innerWidth; 
	if (document.compatMode=='CSS1Compat') return document.documentElement.clientWidth; 
	if (document.body) return document.body.clientWidth; 
	return window.undefined; 
}
*/
// replaced above submodal with common window functions
function getViewportHeight() {
    return windowDimensionObj.getHeight();
}
function getViewportWidth() {
    return windowDimensionObj.getWidth();
}

/**
 * POPUP WINDOW CODE
 * 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 gHideSelects = false;
var gPlaceholderUrl = "/vendors/loading.html";

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);

function subModal_setPlaceholderUrl( sUrl ) {
	gPlaceholderUrl = sUrl;
}

 /**
	* @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.
	*/

function showPopWin(url, width, height, returnFunc, x, y ) {
    var fullHeight = getViewportHeight();
    var fullWidth = getViewportWidth();

	gPopupIsShown = true;
	disableTabIndexes();
	gPopupMask.style.display = "block";
	gPopupContainer.style.display = "block";

	var titleBarHeight = 0;
    if (document.getElementById("popupTitleBar")) {
        titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);
    }
    if (width != null && height != null) {
        // calculate where to place the window on screen
        if (width > fullWidth && (height+titleBarHeight) > fullHeight) {
            // fix width and height
            width = fullWidth;
            height = fullHeight - titleBarHeight;
        } else if (width > fullWidth) {
            // fix width
            width = fullWidth;
        } else if ((height+titleBarHeight) > fullHeight) {
            // fix height
            height = fullHeight - titleBarHeight;
        }
    } else {
        if (height == null) {
            height = fullHeight - titleBarHeight;
        }
        if (width == null) {
            width = fullWidth;
        }
    }

    positionPopWin(width, height, x, y );

    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
    if (document.getElementById("popupTitleBar")) {
    	gPopFrame.style.width = parseInt(document.getElementById("popupTitleBar").offsetWidth, 10) + "px";
    }
	gPopFrame.style.height = (height) + "px";

	// set the url
    if (url != null) {
    	gPopFrame.src = url;
    }
    if (returnFunc) {
        gReturnFunc = returnFunc;
    }
	// for IE
	if (gHideSelects == true) {
		var oPopup = gPopupContainer || docGet( "popupContainer" );
		hideDropdowns( oPopup )
	}

	self.subModalState = "visible";
	gPopFrame.subModalState = "visible";
	
//	window.setTimeout("setPopTitle();", 600);
}

//
var gi = 0;
function positionPopWin(width, height, x, y) {
	if (gPopupIsShown == true) {
		if (width == null || isNaN(width)) {
			width = gPopupContainer.offsetWidth;
		}
		if (height == null) {
			height = gPopupContainer.offsetHeight;
		}

		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 + 1000 + "px";
		gPopupMask.style.width = fullWidth + "px";
		gPopupMask.style.top = scTop + "px";
		gPopupMask.style.left = scLeft + "px";

		window.status = gPopupMask.style.top + " " + gPopupMask.style.left + " " + gi++;

		var titleBarHeight = 0;
        if (document.getElementById("popupTitleBar")) {
            titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);
        }

		if( x ) {
			gPopupContainer.style.left = x + "px";
		} else {
			gPopupContainer.style.left =  (scLeft + ((fullWidth - width) / 2)) + "px";
		}
		if( y ) {
			gPopupContainer.style.top = y + "px";
		} else {
			gPopupContainer.style.top = (scTop + ((fullHeight - (height+titleBarHeight)) / 2)) + "px";
		}

		//alert(fullWidth + " " + width + " " + gPopupContainer.style.left);
	}
}

addEvent(window, "resize", positionPopWin);
window.onscroll = positionPopWin;

/**
 * @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";

	self.subModalState = "hidden";
	gPopFrame.subModalState = "hidden";
	
	if (callReturnFunc == true && gReturnFunc != null) {
		gReturnFunc(window.frames["popupFrame"].returnVal);
	}

	gPopFrame.src = gPlaceholderUrl;

	// display all select boxes
	if (gHideSelects == true) {
		restoreDropdowns();
	}
    changeOpac(0, 'popupMask');
}

/**
 * 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() {
	if (window.frames["popupFrame"].document.title == null) {
		window.setTimeout("setPopTitle();", 10);
	} else {
        if (document.getElementById("popupTitle")) { // inkoo added - check to see if the title div is even there...
            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++;
			}
		}
	}
}

function hideDropdowns( oPopup ) {

	var arr = document.getElementsByTagName("SELECT");

	self._dropdowns_ = new Array( arr.length );
	self._dropdowns_state_ = new Array( arr.length );
	self._dropdowns_enabled_ = new Array( arr.length );

	for( var i=0,n=arr.length; i < n; i++ ) {
		self._dropdowns_[ i ] = arr[ i ];
		self._dropdowns_state_[ i ] = new String( arr[ i ].style.visibility );
		self._dropdowns_enabled_[ i ] = new String( arr[ i ].disabled );
		var overlap = ( self.isOverlapped ? self.isOverlapped( arr[ i ], oPopup ) : true );
		arr[ i ].style.visibility = ( overlap ? "hidden" : "visible" );
		arr[ i ].disabled = true;
		arr[ i ].style.cursor="wait";
	}

}

function restoreDropdowns() {
	self._dropdowns_ = ( self._dropdowns_ ) || document.getElementsByTagName("SELECT");
	self._dropdowns_state_ = ( self._dropdowns_state_ ) || new Array( self._dropdowns_.length );
	for( var i=0, n=self._dropdowns_.length; i < n; i++ ) {
		self._dropdowns_[ i ].style.visibility = self._dropdowns_state_[ i ];
		self._dropdowns_[ i ].disabled = ( "true" == self._dropdowns_enabled_[ i ] );
		self._dropdowns_[ i ].style.cursor="default";
	}
}