function makePopup(windowPosX,windowPosY,windowName,url,name,w,h,extra){
	var titlebarHeight = 28;
	str="height="+h+",width="+w+","+extra;
	if(parseInt(navigator.appVersion)>3) // supports screen.width
		if (windowPosX == -1) {
			str+=",left=" + (screen.width -w)/2 + ",top=" + parseInt(((screen.height -h)-titlebarHeight)/2);
		}
		else {
			str+=",left="+windowPosX+",top="+windowPosY;
		}
	var k = eval(windowName + "=window.open('" + url + "','" + name + "','" + str + "')");
	return k;
}

function openPop(url,width,height) {
	ak_pop = makePopup(-1,-1,'tab', url,'tab',width,height,'scrollbars=yes');		
	ak_pop.focus();	
}

/******** prace s inputy **************/

function remove_txt(txt,idcko) {
								
	var t = document.getElementById(idcko);
	if(t.value == txt){
		t.value = "";
	}
}

function set_txt(txt,idcko) {
	
	var t = document.getElementById(idcko);
	if(t.value == ""){
		t.value = txt;
	}
}

function CheckAll(f,el) {
	for (var i=0;i<f.elements.length;i++)
	{
		var e=f.elements[i];
		if (e.name==el) e.checked=f.check_all.checked;
	}
}

function poptavka() {
	width = 450;
	height = 460;		
	Url = '/poptavka';				 
	ak_pop = makePopup(-1,-1,'mail', Url,'mail',width,height,'scrollbars=no');		
	ak_pop.focus();	 
}
	
function poptavkaEn() { 
	width = 450;
	height = 460;		
	Url = '/en/enquiry';				
	ak_pop = makePopup(-1,-1,'mail', Url,'mail',width,height,'scrollbars=no');		
	ak_pop.focus();	 
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function BO_show() {
	var bo = document.getElementById('bo');
	var by = document.getElementById('by');
	bo.style.right = parseInt( parseInt(by.style.right.toString().substring(0,2)) + 30) +'px';
	bo.style.top = parseInt( parseInt(by.style.top.toString().substring(0,1)) - 40) +'px';
	bo.style.display = 'block';
	fade('bo', 0);
}

function BO_hide() {
	var bo = document.getElementById('bo');
	var by = document.getElementById('by');
	bo.style.right = 20;
	bo.style.top = 20;
	bo.style.display = 'none';
	fadeout();
	
}


function fade (div,opac) {
	var obj = document.getElementById(div);
	var passed = parseInt(opac);
	var newOpac = parseInt(passed+10);
	if ( newOpac < 80 ) {
		obj.style.opacity = '.'+newOpac;
		obj.style.filter = "alpha(opacity:"+newOpac+")";
		opacityID = setTimeout("fade('"+div+"','"+newOpac+"')",50);
	}
	else { 
		obj.style.opacity = '.80';
		obj.style.filter = "alpha(opacity:80)";
	}
}

function fadeout () {		
	if ( window.opacityID ) {
		clearTimeout(opacityID);
	}		
}

function inA(i, ch) {
	//alert(ch);
	var t = document.getElementById("i"+i);
	t.disabled = ch.checked?'':'disabled';			
	t.style.backgroundColor = ch.checked?'':'#E5E5E5';
}