I want to add some css classes in head Tag, with jQuery (and not a css file like Jquery add css to head)My css classes are like this: \[code\]#control1 { width:60px; height:55px; background:url(../images/logo1.png) no-repeat; float:left; }#control1.selected {background:url(../images/logo1_aktiv.png) no-repeat;}\[/code\]Thanks for help.