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 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;
}


function closeFreezer() {
    clearFreezer();
}


function clearFreezer()
{
	document.getElementById("mbd").innerHTML = "";
	hm();
    
    //fixed IE bug: Ked je v tabe Wysiwyg editor, IE potrebuje 2 min, kym dovoli kliknut do form fieldu, ak sa robi select or dialog
    // e.g. mailList
    if (navigator.appName.indexOf('Microsoft') != -1) {
    	var frame = document.getElementsByTagName("iframe");
    	if(frame) {
    		frame[0].contentWindow.focus();
    	}
    }
        
}


function showCertificateKnauf(url) {
	sm("box",428,530);
	document.getElementById('txt').innerHTML = "<iframe name='DIALOG_FRAME' id='DIALOG_FRAME' width='423' height='500' scrolling='auto'></iframe>"
	
	document.getElementById('DIALOG_FRAME').src=url;
    document.getElementById('freezer_buttons').innerHTML = "<button type=\"submit\" onclick=\"closeFreezer();\">zavrieť</button>";
}

function showCertificateVP(url) {
	sm("box",768,530);
	document.getElementById('txt').innerHTML = "<iframe name='DIALOG_FRAME' id='DIALOG_FRAME' width='763' height='500' scrolling='no'></iframe>"
	
	document.getElementById('DIALOG_FRAME').src=url;
    document.getElementById('freezer_buttons').innerHTML = "<button type=\"submit\" onclick=\"closeFreezer();\">zavrieť</button>";
}