improve pickerchange event
improve pickerchange event

cl4rke/webshim,pablogrela/webshim,fashionsun/webshim,ilovezy/webshim,ilovezy/webshim,tomascassidy/webshim,ilovezy/webshim,tomascassidy/webshim,pablogrela/webshim,tomascassidy/webshim,fashionsun/webshim,cl4rke/webshim,aFarkas/webshim,webdev1001/webshim,webdev1001/webshim,aFarkas/webshim,cl4rke/webshim,pablogrela/webshim,webdev1001/webshim,fashionsun/webshim,aFarkas/webshim