<![CDATA[
$("form img[onclick]").each(function(i){
if($(this).attr("onclick") == "confirm()") {
$(this).css("border","2px solid red");
}
});
//Find all of the images with an onclick event of confirm() and Makem red.
function confirm() {
alert("red")
}
function somethingelse() {
alert("not red")
}
<img src="/jquery/images/apple.png" height="48" width="48" border="0">
<img src="/jquery/images/baseball.png" height="48" width="48" border="0" onclick="confirm()">
<img src="/jquery/images/banana.png" height="48" width="48" border="0" onclick="somethingelse()">
<img src="/jquery/images/basketball.png" height="48" width="48" border="0">
]]>