A little dab'll do ya
Code Snippets
Highlight Related Label when Input in Focus
$("form :input").focus(function() {
$("label[for='" + this.id + "']").addClass("labelfocus");
}).blur(function() {
$("label").removeClass("labelfocus");
});$("form :input").focus(function() {
$("label[for='" + this.id + "']").addClass("labelfocus");
}).blur(function() {
$("label").removeClass("labelfocus");
});