var imgChanged = 0;
var imgId = 0;
function imgOver(id, filename) {
	imgId = id;
	imgChanged = document.getElementById(id).src;
	document.getElementById(id).src = filename;
}

function imgOut () 
{
	document.getElementById(imgId).src = imgChanged;
	imgId = 0;
	imgChanged = 0;
}

function popup(katalog,plik)
{
	w=650;
	h=650;
	params='toolbar=no,location=no,directories=no,status=no,menubar=no,width='+w+',height='+h;
	params += 'scrollbars=no,resizable=no, top='+((screen.height/2) - h/2)+',left='+((screen.width/2) - w/2);

   pop = window.open("/index.php?page=popup&katalog="+katalog+"&plik="+plik,"pop",params);
   pop.focus();
}

function popup2(page)
{
	w=720;
	h=650;
	params='toolbar=no,location=no,directories=no,status=no,menubar=no,width='+w+',height='+h;
	params += 'resizable=yes, top='+((screen.height/2) - h/2)+',left='+((screen.width/2) - w/2)+',scrollbars=yes';

   pop = window.open(page,"pop",params);
   pop.focus();
}

function validate(msg)
{
	return confirm(msg);
}

var fieldValues = new Array();

function clearFieldText(obj)
{
	if(!fieldValues[obj.name])
	{
		fieldValues[obj.name] = obj.value;
		obj.value="";
	}
}

function setFieldText(obj)
{
	if(obj.value.length == 0)
	{
		obj.value = fieldValues[obj.name];
		delete fieldValues[obj.name];
	}
}

currentDisplayed = 0;
function swapElement(id)
{
	if(document.getElementById(id).style.display=='block')
	{
		document.getElementById(id).style.display='none';
		currentDisplayed = 0;
	}
	else
	{
		if(currentDisplayed!=0 && document.getElementById(currentDisplayed).style.display=='block')
			document.getElementById(currentDisplayed).style.display='none';
		document.getElementById(id).style.display='block';
		currentDisplayed = id;
	}
}

function jumpToPkat(obj)
{
	//alert(obj.options[obj.selectedIndex].value);
	document.location='#pk'+obj.options[obj.selectedIndex].value;
	obj.selectedIndex = 0;
}

function showLoader(type)
{
	if(type==0)
		document.getElementById('loader').style.display = 'none';
	else
	{
	 	var arrayPageScroll = document.viewport.getScrollOffsets();
      var top = arrayPageScroll[1] + (document.viewport.getHeight() / 50)+50;
		document.getElementById('loader').style.top = top+'px';
		document.getElementById('loader').style.display = 'block';
	}
		
}