rem: if (index >= usedEl.options.length - 1) { 
add: if (index < 0 || index >= usedEl.options.length - 1) { 
context: function bsw_moveDown(key) {    var usedEl = document.getElementById("blocksUsedList_" + key);    var index = usedEl.selectedIndex;    if (index >= usedEl.options.length - 1) {	return;    }    bsw_moveBlock(key, false);}
meta: 3727	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3727/4e0668d0d3439559f1588c90d914de857870158b/BlockSelectWidget.js/clean/gallery2/lib/javascript/BlockSelectWidget.js