// Make focused fields stand out.
$('input[type="text"]').addClass("idleField");
$('input[type="text"]').focus(function() {
$(this).removeClass("idleField").addClass("focusField");
if (this.value == this.defaultValue){
this.value = '';
}
if(this.value != this.defaultValue){
this.select();
}
});
$('input[type="text"]').blur(function() {
$(this).removeClass("focusField").addClass("idleField");
if ($.trim(this.value == '')){
this.value = (this.defaultValue ? this.defaultValue : '');
}

<script language='javascript'>
/*
* This function does some client side input validation. Automatically removing
* Bad characters before they cause a problem. Additional validation is done on the
* server.

* We're also hacking the onpaste event.
*/
$(document).ready(function(){
//set keyup event
$("body").keyup(function(){
if ($("#body").val().match(/[^a-zA-Z0-9 n.,?]/g)) {
$("#body").val($("#body").val().replace(/[^a-zA-Z0-9 n.,?]/g, ''));
}//end if
}); // end keyup

$(document).bind('paste', function(e){
if ($("#body").val().match(/[^a-zA-Z0-9 n.,?]/g)) {
$("#body").val($("#body").val().replace(/[^a-zA-Z0-9 n.,?]/g, ''));
}//end if
})

});// end docready
</script>

Code to assign a jquery dialog to the .confirmClick class on any element.

$(".confirmClick").live("click", function(event) {
// Stop the default action from occuring.
var clickedButton=$(this);
event.preventDefault();
var targetUrl = $(this).attr("href");

// Set up the error message,
if ($(this).attr('title')) {
var question = 'Are you sure you want to ' + $(this).attr('title').toLowerCase() + '?';
} else {
var question = 'Are you sure you want to do this?';
}
//  copy it to a hidden element.
$("#dialogmsg").html(question);
// Initiate the dialog box
$("#dialog").dialog({
bgiframe: false,
resizable: false,
height:140,
modal: true,
overlay: {
backgroundColor: '#000',
opacity: 0.5
},
buttons: {
OK: function() {
$(this).dialog('destroy');
// Set behavior based on link or form.
if (targetUrl){
window.location.href = targetUrl;
}else{
//$(clickedButton).attr("name").submit();
$(clickedButton).closest("form").submit();
}

},
Cancel: function() {
$(this).dialog('close');
$(this).dialog('destroy');
return 1
}
}
});

});