/**
 * Add an event handler function to an object
 * 
 * @param {Object} The object
 * @param {String} The event name to listen for, eg "load", "unload", "mousedown"
 * @param {Function} The function to call on the event
 */
function addEventHandler( targetObject, eventType, handlerFunc ) 
{
	if( targetObject.addEventListener ) 
	{
		targetObject.addEventListener( eventType, handlerFunc, true );
	} 
	else if( targetObject.attachEvent ) 
	{
		targetObject.attachEvent( 'on' + eventType, handlerFunc );
	}
}

/**
 * Create rounded corners on highlighted divs
 */
function roundedCorners() {
 
	var divs = document.getElementsByTagName( "div" );
	
	for( var i = 0; i < divs.length; i++ )
	{
		var div = divs[ i ];
		
		if( div.className.indexOf( "Highlight" ) != -1 )
		{
			var tl = document.createElement( "div" );
			tl.className = "TopLeft Corner";
			div.appendChild( tl );
			
			var tr = document.createElement( "div" );
			tr.className = "TopRight Corner";
			div.appendChild( tr );

			var br = document.createElement( "div" );
			br.className = "BottomRight Corner";
			div.appendChild( br );
			
			var bl = document.createElement( "div" );
			bl.className = "BottomLeft Corner";
			div.appendChild( bl );
		}
	}
}


addEventHandler( window, "load", roundedCorners );

/**
 * Uses the current URL to find the link to the current page and select it
 */
function SetLinks()
{
	var links = document.getElementsByTagName( "a" );	
	var currentUrl = new String( window.location ).toLowerCase();
	
	for( var i = 0; i < links.length; i++ )
	{
		var link = links[ i ];
		var href = link.href.toLowerCase();
		if( href == currentUrl || href.replace( "default.aspx", "" ) == currentUrl )
			link.className += " selected";
	}
}

addEventHandler( window, "load", SetLinks );


var dialogueWindows = new Object();

onunload = closeAllDialogues;

function openDialogue( windowName, windowUrl, windowWidth, windowHeight ) 
{	
	var dialogue = dialogueWindows[ windowName ];
	var windowTop = ( screen.height / 2 ) - ( windowHeight / 2 );
	var windowLeft = ( screen.width / 2 ) - ( windowWidth / 2 );
	var features = 'height=' + windowHeight + ',width=' + windowWidth + ',top=' + windowTop + ',left=' + windowLeft + ',scrollbars=no,resizable=yes,status=no';
	
	if( dialogue && ! dialogue.closed )
		dialogue.close();
	
	dialogueWindows[ windowName ] = window.open( windowUrl, windowName, features );
}

function closeDialogue()
{
	if( window.opener && ! window.opener.closed ) 
	{
		window.opener.focus();
	}
	window.close();
}

function closeAllDialogues()
{
	for( windowName in dialogueWindows )
	{	
		var dialogue = dialogueWindows[ windowName ];
		
		if( dialogue && ! dialogue.closed )
		{
			dialogue.close();
		}
	}
}

function completeDialogue() 
{	
	if( window.opener && ! window.opener.closed ) 
	{
		window.opener.location.reload();
	}
	closeDialogue();
}

function parseGetVars() 
{
    var args = new Array();
    var query = window.location.search.substring( 1 );
    if( query ) 
    {
        var strList = query.split( '&' );
        for( str in strList ) 
        {
            var parts = strList[ str ].split( '=' );
            args[ unescape( parts[ 0 ] ) ] = unescape( parts[ 1 ] );
        }
    }
    return args;
}


function fitImage() 
{
	var offsetWidth = 12;
	var offsetHeight =  30;

	var windowWidth = document.images[0].width + offsetWidth;
	var windowHeight = document.images[0].height + offsetHeight;

	var windowTop = ( screen.height / 2 ) - ( windowHeight / 2 );
	var windowLeft = ( screen.width / 2 ) - ( windowWidth / 2 );

	window.moveTo( windowLeft, windowTop );
	window.resizeTo( windowWidth, windowHeight ); 

	self.focus(); 
}