Exports whats on artboard to png. illustrator CS5 only

Export2PNG.jsx

/*
  @author: Aaron Ogle
  Script to Export Illustrator files as PNG's then make a thumbnail.
  
  Runs in CS5 only

*/
 
//Disable Alerts.  We want this to be as unobtrusive as possible.
app.userInteractionLevel = UserInteractionLevel.DONTDISPLAYALERTS;

main();

function main() {

	// Grab the current doc
	var sourceDoc = app.activeDocument;
	var docName = sourceDoc.name;
	var srcFolder = app.activeDocument.path;
	
	
	//sourceDoc.selection = null; // deselect everything
	sourceDoc.artboards.setActiveArtboardIndex (0); // activate the artboard.
	//sourceDoc.selectObjectsOnActiveArtboard(); // select all in artboard
	sel = sourceDoc.selection[0]; // Get selection
	var vB = sel.visibleBounds;
	var gB = sel.geometricBounds;
	//sourceDoc.fitArtboardToSelectedArt(0); //Resize artboard to the art.
	
	sourceDoc.artboards[0].artboardRect = [gB[0] -15, gB[1] +15,gB[2] +15, gB[3] -15];

   
  
	// Call function getNewName to get the name and file to save the pdf
	targetFile = getNewName(docName, srcFolder, 300);
	    
	// Call function getPNGOptions get the PNGExportOptions for the files
	pngExportOpts = getPNGOptions();
	    
	// Export as PNG
	app.activeDocument.exportFile( targetFile, ExportType.PNG24, pngExportOpts );
	alert(sourceDoc.artboards[0].artboardRect);
	
	// Fire up photoshop for creating thumbnail image
	btMessaging(targetFile, getNewName(docName, srcFolder, 145));

}

// Function to be executed in Photoshop for resizing. Comments in this function mess up the BridgeTalk message.
function createThumb(file, saveFile) {
	psDoc = app.open(file);
	
	if(psDoc.height > psDoc.width) {
		psDoc.resizeImage(null,UnitValue(145,'px'),null,ResampleMethod.BICUBIC);
	} else {
		psDoc.resizeImage(UnitValue(145,'px'),null,null,ResampleMethod.BICUBIC);
	}
  
	var pngOpts = new ExportOptionsSaveForWeb;
	pngOpts.format = SaveDocumentType.PNG;
	pngOpts.PNG8 = false;
	pngOpts.transparency = true;
	pngOpts.quality = 100;
	
	activeDocument.exportDocument(saveFile, ExportType.SAVEFORWEB,pngOpts);
	
	psDoc.close(SaveOptions.DONOTSAVECHANGES);
}
 
//BridgeTalk function
function btMessaging(file, savepath) {
	//Create BridgeTalk message
	var bt = new BridgeTalk();
	bt.target = 'photoshop-12.032';
	bt.body = createThumb.toSource() + "(" + file.toSource()+ ","+savepath.toSource()+");";
	bt.onError = function( btObj ){};
	bt.onResult = function( inBT ){};
	bt.send(30);
}

//Function to create the new file name. 
function getNewName(doc, dstFolder, size) {
	var ext, docName, newName, saveInFile, docName;
	docName = doc;
	ext = '.png'; // new extension for png file
	newName = "";
	
	for ( var i = 0 ; docName[i] != "." ; i++ ) {
		newName += docName[i];
	}

	// If  -[Converted] shows up remove it.
	newName = newName.replace (/.\[Converted\]/g, "");
	
	newName += ext; // full png name of the file
	
	// Destination folder, with image size dir
	dstFolder = dstFolder +'/'+size+'px/';
	
	// If Folder isn't there create it
	if(!Folder(dstFolder).exists){
		Folder(dstFolder).create();
	}
	
	// Create a file object to save the png
	saveInFile = new File( dstFolder + newName );
	
	return saveInFile;
}
 
//Function setting PNG options for Illustrator 
function getPNGOptions() {
	
	// Create the PDFSaveOptions object to set the PDF options
	var pngExportOpts = new ExportOptionsPNG24();
	
	pngExportOpts.antiAliasing = true;
	pngExportOpts.artBoardClipping = true;
	pngExportOpts.horizontalScale = 100.0;
	pngExportOpts.transparency = true;
	pngExportOpts.verticalScale = 100.0;
	
	return pngExportOpts;
}