Use $("div").attr("class") to achieve this;
Refer to the following example: ?if?($(this).parent(). first().attr("class")?==?"MyName")?{ temp?=?temp+"(Normal)"; }?
alert($("#show"). attr("class").indexOf("b"));
alert($("#show2").attr("class")?==?"myCls");
alert($("div:eq(0)").attr("class")?==?"myCls");?