modify a css rule object with javascript [duplicate]
You could use the cssRules on the DOM stylesheet object corresponding to your original stylesheet to modify your rule. var sheet = document.styleSheets[0]; var rules = sheet.cssRules || sheet.rules; rules[0].style.color=”red”; Note that IE uses rules instead of cssRules. Here is a demonstration: http://jsfiddle.net/8Mnsf/1/