// Modal Dialog Box
// copyright 8th July 2006, 16th April 2011 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 showBox(w, h)
{
  sm('box', w, h)
}


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

function scrollFix(){var obol=$a('ol');obol.style.top=posTop()+'px';obol.style.left=posLeft()+'px'}function sizeFix(){var obol=$a('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;tag=document.getElementsByTagName('input');for(i=tag.length-1;i>=0;i--)tag[i].style.visibility=h;tag=document.getElementsByTagName('textarea');for(i=tag.length-1;i>=0;i--)tag[i].style.visibility=h;if ('hidden' === h) {tag=$a('mbox').getElementsByTagName('input');for(i=tag.length-1;i>=0;i--)tag[i].style.visibility='visible';tag=$a('mbox').getElementsByTagName('textarea');for(i=tag.length-1;i>=0;i--)tag[i].style.visibility='visible';tag=$a('mbox').getElementsByTagName('select');for(i=tag.length-1;i>=0;i--)tag[i].style.visibility='visible';}}

function sm(obl, wd, ht)
{
  var h='hidden';
  var b='block';
  var p='px';
  var obol=$a('ol'); 
  var obbxd = $a('mbd');
  
  obbxd.innerHTML = $a(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=$a('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';
  $a('ol').style.display=n;
  $a('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;