var pos = 0, locked = true;
for(var i = 0, len = cm.getColumnCount(); i < len; i++){
if(cm.isHidden(i)) continue;
- var w = cm.getColumnWidth(i);
+ var w = cm.getColumnWidth(i)*1; // make sure it's a number
if(!cm.isLocked(i) && locked){
pos = 0;
locked = false;