Cells that are scrolled to that do not yet exist, now are created

Highlighting (dragging over a range of cells) nearly working

build.js

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+var fs = require('fs')
+  , execSync = require('child_process').execSync
+
+
+//compile parsers
+//cd parser/formula
+//node ../../../jison/ports/php/php.js formula.jison
+//cd ../../
+
+//directories of the JS files
+  , inDir = './Sheet'
+	, outDir = '.'
+
+  //these are the paths to the final combined files that you want to have in the end
+  , temp = ''
+  , result = ''
+	, wrapper = inDir + '/wrapper.js'
+  , combinedFile = outDir + '/jquery.sheet.js'
+  , combinedFileMin = outDir + '/jquery.sheet.min.js'
+
+	, files = [
+	    //namespace first
+		  'Base.js',
+
+	    //non-constructors next
+    	'fn.js',
+    	'sheet.js',
+    	'thread.js',
+    	'utilities.js',
+
+			//children namespaces next
+			'Loader/HTML.js',
+			'Loader/JSON.js',
+			'Loader/XML.js',
+
+			//constructors next
+			'ActionUI.js',
+			'Cell.js',
+			'CellHandler.js',
+			'CellTypeHandlers.js',
+			'CellRange.js',
+			'Highlighter.js',
+			'SpreadsheetUI.js',
+			'Theme.js',
+
+			//environment correction last
+			'environmentCorrection.js'
+    ]
+	, parserFiles = [
+			'parser/formula/formula.js',
+			'parser/tsv/tsv.js'
+		]
+  ;
+
+//run through the JS files
+files.forEach(function(file) {
+	temp += fs.readFileSync('Sheet/' + file, 'utf8').toString();
+});
+
+result = fs.readFileSync(wrapper, 'utf8').toString().replace('CODE_HERE', function() { return temp; });
+
+//run through the parser files
+parserFiles.forEach(function(file) {
+  result += fs.readFileSync(file, 'utf8').toString();
+});
+
+fs.writeFileSync(combinedFile, result);
+
+//compress it
+
+//add the file to the git base
+execSync('git add ' + combinedFile);
+
+try {
+  execSync('yui-compressor -o ' + combinedFileMin + ' ' + combinedFile);
+  execSync('git add ' + combinedFileMin);
+} catch (e) {
+  console.log('WARNING: attempted to use yui-compressor, but it is not installed correctly');
+}
+
+process.exit(0);