/*
	FILE: global.js.php
	PURPOSE: global functions
*/

//
//	global variables
//

var root = '<?= WEBROOT ?>';

function getEl(elementId)
{
	//
	//	Name: getEl
	//	Purpose: shortcut for document.getElementById
	//	Parameters:
	//		elementId (string): id of the element to retrieve
	//	Details: none
	//

	if (arguments.length > 1)
	{
		var top_parent = arguments[1];
		return top_parent.document.getElementById(elementId);
	}
	else
		return document.getElementById(elementId);
}

function PreloadRolloverImages(arrImages)
{

	//
	//	Name: PreloadRolloverImages
	//	Purpose: to preload images
	//	Parameters:
	//		arrImages (array): an array of path/image strings
	//	Details: it is assumed that the format of the images to preload are:
	//			Normal Image : imagename_n.gif
	//			Hovered Image: imagename_o.gif
	//			Pressed Image: imagename_d.gif
	//

	var i;

	//
	//	Make sure the parameter passed in is an array
	//

	if (typeof(arrImages) != "object" || !arrImages.length)
	{
		alert('Usage: PrloadRolloverImages(array)');
		return false;
	}

	for (i=0; i< images.length; i++)
	{
	    eval('var imgo' + i + ' = new Image(); imgo' + i + '.src="' + images[i] + '_o.gif";');
	    eval('var imgd' + i + ' = new Image(); imgd' + i + '.src="' + images[i] + '_d.gif";');
	}
}

function ImageChange(image, destination)
{
    image.src = destination;
}

function printfire(message)
{
	if (document.createEvent)
	{
		//console.debug(message);
	}
}

function PopUp(message)
{
	//
	//	Function: PopUp
	//	Purpose: create a pop up with a message
	//	Parameters:
	//		message (string): message to be displayed in pop-up
	//

	//
	//	retrieve location of mouse pointer
	//

	//
	//	create box at pointer location
	//


}

function Message(title, message)
{
	//
	//	Function: Message
	//	Purpose: show a message panel
	//	Parameters:
	//		title (string): title to be displayed at top of message
	//		message (string): message to be displayed
	//

//	location.href = root + "/panels/pnlMessage.php?title=" + URLencode(title) + "&message=" + URLencode(message);
	getEl('pnlCenter', window.top).src = 'panels/pnlMessage.php?title=' + URLencode(title) + '&message=' + URLencode(message);
}

function URLencode(sStr)
{
    return escape(sStr).
             replace(/\+/g, '%2B').
                replace(/\"/g,'%22').
                   replace(/\'/g, '%27').
                     replace(/\//g,'%2F');
}