// 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 pageWidth() {
	var result;
	if (window.innerWidth != null) {
		result = window.innerWidth;
	}
	else{
		if (document.documentElement && document.documentElement.clientWidth) {
			result = document.documentElement.clientWidth;
		}
		else {
			if (document.body != null) {
				result = document.body.clientWidth;
			}
			else {
				result = null;
			}				
		}
	}
	return result;
}

//function pageHeight() {
//	return window.innerHeight != null? window.innerHeight: document.documentElement && document.documentElement.clientHeight ? document.documentElement.clientHeight:document.body != null? document.body.clientHeight:null;
//}
function pageHeight() {
	var result;
	if (window.innerHeight != null) {
		result = window.innerHeight;
	}
	else {
		if (document.documentElement && document.documentElement.clientHeight) {
			result = document.documentElement.clientHeight;
		}
		else {
			if (document.body != null) {
				result = document.body.clientHeight;
			}
			else {
				result = null;
			}
		}
	}
	return result;
}

//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 posLeft() {
	var result;
	if (typeof window.pageXOffset != 'undefined') {
		result = window.pageXOffset;
	}
	else {
		if (document.documentElement && document.documentElement.scrollLeft) {
			result = document.documentElement.scrollLeft;
		}
		else {
			if (document.body.scrollLeft) {
				result = document.body.scrollLeft;
			}
			else {
				result = 0;
			}
		}
	}
	return result;
}

//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 posTop() {
	var result;
	if (typeof window.pageYOffset != 'undefined') {
		result = window.pageYOffset;
	}
	else {
		if (document.documentElement && document.documentElement.scrollTop) {
			result = document.documentElement.scrollTop;
		}
		else {
			if (document.body.scrollTop) {
				result = document.body.scrollTop;
			}
			else {
				result = 0;
			}
		}
	}
	return  result;
}

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 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;