Export PhotoShop Layers as .png (save as a .jsx file open in Adobe ExtendScript Toolkit)

gistfile1.txt

// layerName.jsx
// Copyright 2006-2008
// Written by Jeffrey Tranberry
// Photoshop for Geeks Version 2.0

/* 
Description:
Using an alert(); to display current Layer's name.
Set the name of the current layer to a string "Timmy"
*/

// enable double clicking from the 
// Macintosh Finder or the Windows Explorer
#target photoshop

// Make Photoshop the frontmost application
app.bringToFront();

// Pops open a dialog for the user to
// set the output folder
var outputFolder = Folder.selectDialog("Select a folder for the output files");

// Get the layers length
var docLayers = app.activeDocument.layers;
var len = docLayers.length;

// Start an xml object 

// Store the original visibility properties of the layers so we can set them back when done
// Then set all layer visibility to false
var originalVisibility = new Array();
for(var i = 0; i < len; i++)
  {
		originalVisibility[i] = docLayers[i].visible;
		docLayers[i].visible = false;
	}

    docLayers[0].visible = true;

for(i = 0; i < app.activeDocument.layers.length - 1; i++) {
		var _curLayer = docLayers[i];
		//if(originalVisibility[i] == false) continue;
		
        
		_curLayer.visible = true;
		docLayers[0].visible = true;
        docLayers[app.activeDocument.layers.length - 1].visible = true;
		//Saves as a PNG to the selected folder
		var pngOptions = new PNGSaveOptions();
		pngOptions.interlaced = false;
		app.activeDocument.saveAs( File( outputFolder + "/" + _curLayer.name + ".png"), pngOptions, true);
		
		_curLayer.visible = false;

		//var tmpProdTagsXML = new XML("<tags></tags>");
		//tmpTagsXML.text(typeTag + ",products");
}

Nice one. It helped me a lot.