rem: style.setProperty(propname, propval, priority); 
add: style.setProperty(propname, propValue.value, priority); 
context:   cmdEditSelectedProperty: function()  {    var style = this.getSelectedRule().style;    var propname = this.getSelectedProp();    var propval = style.getPropertyValue(propname);    var priority = style.getPropertyPriority(propname);    propval = prompt("Enter the property value:", propval);    if (!propval) return;    style.removeProperty(propname);    style.setProperty(propname, propval, priority);    this.mPropsBoxObject.invalidate();  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/aea57c3ed9a7e2e2498e23222a629291054c4255/styleRules.js/buggy/extensions/inspector/resources/content/viewers/styleRules/styleRules.js