// Global for brower version branching.
var Nav4 = ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) == 4))


//--------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------
//
//  BEGIN MODAL DIALOG CODE (can also be loaded as external .js file)
//

// One object tracks the current modal dialog opened from this window.
var dialogWin = new Object()

// Generate a modal dialog.
// Parameters:
//    url -- URL of the page/frameset to be loaded into dialog
//    width -- pixel width of the dialog window
//    height -- pixel height of the dialog window
//    returnFunc -- reference to the function (on this page)
//                  that is to act on the data returned from the dialog
//    args -- [optional] any data you need to pass to the dialog
function openDGDialog(url, width, height, top, left, returnFunc, args) {
	if (!dialogWin.win || (dialogWin.win && dialogWin.win.closed)) {
		// Initialize properties of the modal dialog object.
		dialogWin.returnFunc = returnFunc
		dialogWin.returnedValue = ""
		dialogWin.args = args
		dialogWin.url = url
		dialogWin.width = width
		dialogWin.height = height
		// Keep name unique so Navigator doesn't overwrite an existing dialog.
		dialogWin.name = (new Date()).getSeconds().toString()
		// Assemble window attributes and try to center the dialog.
		if (Nav4) {
			// Center on the main window.
			dialogWin.left = window.screenX + 
			   ((window.outerWidth - dialogWin.width) / 2)
			dialogWin.top = window.screenY + 
			   ((window.outerHeight - dialogWin.height) / 2)
			// offset window?		
			if (top<0)  dialogWin.top=dialogWin.top-top;
			if (left<0) dialogWin.left=dialogWin.left-left;
			//
			var attr = "screenX=" + dialogWin.left + 
			   ",screenY=" + dialogWin.top + ",resizable=no,width=" + 
			   dialogWin.width + ",height=" + dialogWin.height
		} else {
			// The best we can do is center in screen.
			dialogWin.left = (screen.width - dialogWin.width) / 2
			dialogWin.top = (screen.height - dialogWin.height) / 2
			// offset window?		
			if (top<0)  dialogWin.top=dialogWin.top-top;
			if (left<0) dialogWin.left=dialogWin.left-left;
			//
			var attr = "left=" + dialogWin.left + ",top=" + 
			   dialogWin.top + ",resizable=no,width=" + dialogWin.width + 
			   ",height=" + dialogWin.height+",dependent"
		}
		//
		// Generate the dialog and make sure it has focus.
		dialogWin.win=window.open(dialogWin.url, dialogWin.name, attr)
		dialogWin.win.focus()
	} else {
		dialogWin.win.focus()
	}
}

// Event handler to inhibit Navigator form element 
// and IE link activity when dialog window is active.
function deadend() {
	if (dialogWin.win && !dialogWin.win.closed) {
		dialogWin.win.focus()
		return false
	}
}

// Since links in IE4 cannot be disabled, preserve 
// IE link onclick event handlers while they're "disabled."
// Restore when re-enabling the main window.
var IELinkClicks

// Disable form elements and links in all frames for IE.
function disableForms() {
	IELinkClicks = new Array()
	for (var h = 0; h < frames.length; h++) {
		for (var i = 0; i < frames[h].document.forms.length; i++) {
			for (var j = 0; j < frames[h].document.forms[i].elements.length; j++) {
				frames[h].document.forms[i].elements[j].disabled = true
			}
		}
		IELinkClicks[h] = new Array()
		for (i = 0; i < frames[h].document.links.length; i++) {
			IELinkClicks[h][i] = frames[h].document.links[i].onclick
			frames[h].document.links[i].onclick = deadend
		}
		frames[h].window.onfocus = checkModal
    	frames[h].document.onclick = checkModal
	}
}

// Restore IE form elements and links to normal behavior.
function enableForms() {
	for (var h = 0; h < frames.length; h++) {
		for (var i = 0; i < frames[h].document.forms.length; i++) {
			for (var j = 0; j < frames[h].document.forms[i].elements.length; j++) {
				frames[h].document.forms[i].elements[j].disabled = false
			}
		}
		for (i = 0; i < frames[h].document.links.length; i++) {
			frames[h].document.links[i].onclick = IELinkClicks[h][i]
		}
	}
}

// Grab all Navigator events that might get through to form
// elements while dialog is open. For IE, disable form elements.
function blockEvents() {
	if (Nav4) {
		window.captureEvents(Event.CLICK | Event.MOUSEDOWN | Event.MOUSEUP | Event.FOCUS)
		window.onclick = deadend
	} else {
		disableForms()
	}
	window.onfocus = checkModal
}
// As dialog closes, restore the main window's original
// event mechanisms.
function unblockEvents() {
	if (Nav4) {
		window.releaseEvents(Event.CLICK | Event.MOUSEDOWN | Event.MOUSEUP | Event.FOCUS)
		window.onclick = null
		window.onfocus = null
	} else {
		enableForms()
	}
}

// Invoked by onFocus event handler of EVERY frame,
// return focus to dialog window if it's open.
function checkModal() {
	setTimeout("finishChecking()", 50)
	return true
}

function finishChecking() {
	if (dialogWin.win && !dialogWin.win.closed) {
		dialogWin.win.focus() 
	}
}

//  END MODAL DIALOG CODE
//
//--------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------



function read_querystring()
{
	var a_out = new Object();
	var s_loc = String(location.href);
	if(s_loc.indexOf('?')>0){
		var p;
		var s_query = s_loc.substr(s_loc.indexOf('?')+1);
		var a_query = s_query ? s_query.split('&') : new Array();
		for(var i=0; i<a_query.length; i++){
			p = a_query[i].split('=');
			a_out[p[0]] = p[1].replace(/\+/g, ' ');
		}
	}
	return a_out;
}



function RefreshPage()
{
	window.location.reload();
}


/*
Note that this tries several methods of creating the XmlHttpRequest object,
depending on the browser in use. Also note that as of this writing, the
Opera browser does not support the XmlHttpRequest.
*/
function createRequester()
{
    try
    {
        req = new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch(e)
    {
        try
        {
            req = new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch(oc)
        {
            req = null;
        }
    }

    if(!req && typeof XMLHttpRequest != "undefined")
    {
        req = new XMLHttpRequest();
    }
    
    return req;
}