if(prev_clicked)
{
$(\"#accordion li a.category\").css(\'background-image\', \'url(\"img/off_all_channel.png\")\');
$(\"#accordion li
You can use .css() to remove css property as well, like this:
$(".icha0").css("background-color","");
$(".icha0").css("opacity","");
As mentioned in the jquery documentation:
Setting the value of a style property to an empty string — e.g. $('#mydiv').css('color', '') — removes that property from an element if it has already been directly applied,