rem: if(w){ val += w; } 
add: if(w){ val += (w >= 0 ? w : -1 * w); } 
context:     addStyles : function(sides, styles){        var val = 0, v, w;        for(var i = 0, len = sides.length; i < len; i++){            v = this.getStyle(styles[sides.charAt(i)]);            if(v){                 w = parseInt(v, 10);                 if(w){ val += w; }            }        }        return val;    },
meta: 2891	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2891/d109eea1e59fbb030ac98e95f181f72da9611a48/ext-all-debug.js/buggy/gemma-web/src/main/webapp/scripts/ext/ext-all-debug.js