// Modal Dialog Box
// copyright 8th July 2006 by Stephen Chapman
// http://javascript.about.com/
// permission to use this Javascript on your web page is granted
// provided that all of the code in this script (including these
// comments) is used without any alteration
function pageWidth() 
{ 
	return window.innerWidth != null ? window.innerWidth : document.documentElement && document.documentElement.clientWidth ? document.documentElement.clientWidth : document.body != null ? document.body.clientWidth : null; 
} 
	
function pageHeight() 
{ 
	return window.innerHeight != null ? window.innerHeight : document.documentElement && document.documentElement.clientHeight ? document.documentElement.clientHeight : document.body != null ? document.body.clientHeight : null; 
} 

function posLeft() 
{ 
	return typeof window.pageXOffset != 'undefined' ? window.pageXOffset : document.documentElement && document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft ? document.body.scrollLeft : 0; 
} 

function posTop() 
{ 
	return typeof window.pageYOffset != 'undefined' ? window.pageYOffset : document.documentElement && document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop ? document.body.scrollTop : 0; 
} 

function $(x) 
{ 
	return document.getElementById(x); 
} 

function scrollFix() 
{ 
	var obol = $('ol'); 
	obol.style.top = posTop() + 'px'; 
	obol.style.left = posLeft() + 'px' 
} 
	
function sizeFix() 
{ 
	var obol = $('ol'); 
	obol.style.height = pageHeight() + 'px'; 
	obol.style.width = pageWidth() + 'px'; 
} 

function kp(e) 
{ 
	ky = e ? e.which : event.keyCode; 
	if (ky == 88 || ky == 120) hm(); 
	return false 
} 
	
function inf(h) 
{ 
	tag = document.getElementsByTagName('select'); 
	for (i = tag.length - 1; i >= 0; i--) 
		tag[i].style.visibility = h; 
	tag = document.getElementsByTagName('iframe'); 
	for (i = tag.length - 1; i >= 0; i--) 
		tag[i].style.visibility = h; 
	tag = document.getElementsByTagName('object'); 
	
	for (i = tag.length - 1; i >= 0; i--) 
		tag[i].style.visibility = h; 
} 

function sm(obl, wd, ht) 
{ 
	var h = 'hidden'; 
	var b = 'block'; 
	var p = 'px'; var obol = $('ol'); 
	var obbxd = $('mbd'); 
	obbxd.innerHTML = $(obl).innerHTML; 
	obol.style.height = pageHeight() + p; 
	obol.style.width = pageWidth() + p; 
	obol.style.top = posTop() + p; 
	obol.style.left = posLeft() + p; 
	obol.style.display = b; 
	var tp = posTop() + ((pageHeight() - ht) / 2) - 12; 
	var lt = posLeft() + ((pageWidth() - wd) / 2) - 12;
	var obbx = $('mbox'); 
	obbx.style.top = (tp < 0 ? 0 : tp) + p; 
	obbx.style.left = (lt < 0 ? 0 : lt) + p; 
	obbx.style.width = wd + p; 
	obbx.style.height = ht + p; 
	inf(h); 
	obbx.style.display = b; 
	return false; 
} 

function MaskParentWindow() 
{ 
	var h = 'hidden'; 
	var b = 'block'; 
	var p = 'px'; 
	var obol = $('ol'); 
	obol.style.height = pageHeight() + p; 
	obol.style.width = pageWidth() + p; 
	obol.style.top = posTop() + p; 
	obol.style.left = posLeft() + p; 
	obol.style.display = b; 
	return false; 
} 

function HideMask() 
{ 
	var v = 'visible'; 
	var n = 'none'; 
	$('ol').style.display = n; 
	$('mbox').style.display = n; 
	inf(v); 
	document.onkeypress = '' 
}

function hm() 
{ 
	var v = 'visible'; 
	var n = 'none'; 
	$('ol').style.display = n; 
	$('mbox').style.display = n; 
	inf(v); 
	document.onkeypress = '' 
} 
	
function initmb() {
	var ab = 'absolute'; 
	var n = 'none'; 
	var obody = document.getElementsByTagName('body')[0]; 
	var frag = document.createDocumentFragment(); 
	var obol = document.createElement('div'); 
	obol.setAttribute('id', 'ol'); 
	obol.style.display = n; 
	obol.style.position = ab; 
	obol.style.top = 0; 
	obol.style.left = 0; 
	obol.style.zIndex = 998; 
	obol.style.width = '100%'; 
	frag.appendChild(obol); 
	var obbx = document.createElement('div'); 
	obbx.setAttribute('id', 'mbox'); 
	obbx.style.display = n; 
	obbx.style.position = ab; 
	obbx.style.zIndex = 999; 
	var obl = document.createElement('span'); 
	obbx.appendChild(obl); 
	var obbxd = document.createElement('div'); 
	obbxd.setAttribute('id', 'mbd'); 
	obl.appendChild(obbxd); 
	frag.insertBefore(obbx, obol.nextSibling); 
	obody.insertBefore(frag, obody.firstChild);
	window.onscroll = scrollFix; 
	window.onresize = sizeFix;
}
window.onload = initmb;