// Alustetaan apumuuttujat
var currentDirectory;
var currentFileIdx;
var currentFileArraySize;

var arVersion = navigator.appVersion.split("MSIE")
var version = parseFloat(arVersion[1])

function fixPNG(myImage) 
{
    if ((version >= 5.5) && (version < 7) && (document.body.filters)) 
    {
       var imgID = (myImage.id) ? "id='" + myImage.id + "' " : ""
	   var imgClass = (myImage.className) ? "class='" + myImage.className + "' " : ""
	   var imgTitle = (myImage.title) ? 
		             "title='" + myImage.title  + "' " : "title='" + myImage.alt + "' "
	   var imgStyle = "display:inline-block;" + myImage.style.cssText
	   var strNewHTML = "<span " + imgID + imgClass + imgTitle
                  + " style=\"" + "width:" + myImage.width 
                  + "px; height:" + myImage.height 
                  + "px;" + imgStyle + ";"
                  + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
                  + "(src=\'" + myImage.src + "\', sizingMethod='scale');\"></span>"
	   myImage.outerHTML = strNewHTML	  
    }
}

function onDirClick(directory)
{
	dijit.byId("pageContentPane").setHref("showDirInfo.php?dir=" + directory);
}

function showPicture(directory, fileIdx, fileArraySize)
{	
	currentDirectory = directory;
	currentFileIdx = fileIdx;
	currentFileArraySize = fileArraySize;

	dijit.byId("picturePane").setHref("showPicture.php?dir=" + currentDirectory + "&fileIdx=" + currentFileIdx);
	dijit.byId("showPictureDialog").show();
	
	setCmdButtonStatus();
}

function prevPicture()
{
	currentFileIdx --;

	dijit.byId("picturePane").setHref("showPicture.php?dir=" + currentDirectory + "&fileIdx=" + currentFileIdx);
	
	setCmdButtonStatus();
}

function nextPicture()
{
	currentFileIdx ++;

	dijit.byId("picturePane").setHref("showPicture.php?dir=" + currentDirectory + "&fileIdx=" + currentFileIdx);
	
	setCmdButtonStatus();
}

function setCmdButtonStatus()
{
	if (currentFileArraySize > 1)
	{
		if (currentFileIdx == 0)
		{
			document.getElementById("prevButton").style.display = "none";
			document.getElementById("prevButtonDisabled").style.display = "inline";
			document.getElementById("nextButton").style.display = "inline";
			document.getElementById("nextButtonDisabled").style.display = "none";
		}
		else if (currentFileIdx == (currentFileArraySize - 1))
		{
			document.getElementById("prevButton").style.display = "inline";
			document.getElementById("prevButtonDisabled").style.display = "none";
			document.getElementById("nextButton").style.display = "none";
			document.getElementById("nextButtonDisabled").style.display = "inline";
		}
		else
		{
			document.getElementById("prevButton").style.display = "inline";
			document.getElementById("prevButtonDisabled").style.display = "none";
			document.getElementById("nextButton").style.display = "inline";
			document.getElementById("nextButtonDisabled").style.display = "none";
		}
	}
	else
	{
		document.getElementById("prevButton").style.display = "none";
		document.getElementById("prevButtonDisabled").style.display = "inline";
		document.getElementById("nextButton").style.display = "none";
		document.getElementById("nextButtonDisabled").style.display = "inline";
	}
	
}