rem: var toOpacity = typeof element._opacity == 'number' ? element._opacity : 1.0 
add: var toOpacity = typeof element._opacity == 'number' ? element._opacity : 1.0; 
context:       endeffect: function(element) {        var toOpacity = typeof element._opacity == 'number' ? element._opacity : 1.0        new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity});       },
meta: 4973	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4973/2acfab97ba8b45e3591acad18ce7dfdc513694dd/dragdrop.js/buggy/src/dragdrop.js