a simple way to add a modal confirm box to your website

jquery.dlgConfirm.js

/**
 * Open confirmation dialog (jqueryui modal)
 *
 * @requires jquery, jqueryui
 * @param {string} c_text text/html to show in the dialog box
 * @param {string|function(dlg_element)} c_title|confirm_callback title of the dialog box (or callback function)
 * @param {string|function(dlg_element)} c_btn_text|confirm_callback confirm button text (or callback function)
 * @param {string|function(dlg_element)} c_btn_cancel_text|confirm_callback cancel button text (defaults to 'Cancel') (or callback function)
 * @param {function(dlg_element)} confirm_callback callback after the modal box is confirmed 
 */
function dlgConfirm(c_text, c_title, c_btn_text, c_btn_cancel_text, confirm_callback){
   
   if (typeof(confirm_callback) !== 'function'){
      if (typeof(c_title) == 'function'){
         confirm_callback = c_title;
      }else if (typeof(c_btn_text) == 'function'){
         confirm_callback = c_btn_text;
      }else if (typeof(c_btn_cancel_text) == 'function'){
         confirm_callback = c_btn_cancel_text;
      }
   }
   
   if (typeof(c_text) !== 'string'){
      c_text = 'Are you sure?';
   }
   if (typeof(c_title) !== 'string'){
      c_title = 'Confirm';
   }  
   if (typeof(c_btn_text) !== 'string'){
      c_btn_text = 'Confirm';
   }  
   if (typeof(c_btn_cancel_text) !== 'string'){
      c_btn_cancel_text = 'Cancel';
   }     
   
   if ($('#dlgConfirm').length == 0){
      $('body').append('<div id="dlgConfirm" title="Confirm" style="display: none">Are you sure?</div>');
   }
   var btns = {};
   btns[c_btn_text] = function() {
          var dlg = this;
          if (typeof(confirm_callback) == 'function'){
             if (confirm_callback(dlg) !== false){
                $(this).dialog('close');
             }
          }          
   };
   btns[c_btn_cancel_text] = function() {
          $( this ).dialog("close");
   };
   
   $('#dlgConfirm').dialog({
      title: c_title,
      autoOpen: false,
      resizable: false,
      //height:170, //commented out so autosize works
      modal: true,
      buttons: btns
    }).html(c_text).dialog('open');
}