Added file size check

parts/static/script.js

@@ -73,12 +73,17 @@ function save(partID) {
 	}
 	var data = new FormData();
 
-	if (datasheet.length == 1)
+	if (datasheet.length == 1) {
 		if(! datasheet[0]['name'].match(/^[\w\-]+\.pdf$/g)) {
 			alert('Invalid filename. Please match /^[\w\-]+\.pdf$/g');
 			return;
 		}
+		if (datasheet[0]['size'] > 20 * 1000000) {
+			alert('File too large. Must be < 20MB.');
+			return;
+		}
 		data.append('datasheet-file', datasheet[0]);
+	}
 	data.append('partno', partno_v);
 	data.append('location_id', location_id_v)
 	data.append('description', description_v);