/* OnloadScheduler.js - schedules functions to run when a document has loaded
 *
 * The author of this program, Safalra (Stephen Morley), irrevocably releases
 * all rights to this program, with the intention of it becoming part of the
 * public domain. Because this program is released into the public domain, it
 * comes with no warranty either expressed or implied, to the extent permitted
 * by law.
 */
 
var OnloadScheduler =
    new function(){

      var negative = new Array();
      var positive = new Array();

      window.onload = function(){
        for (var i = negative.length - 1; i > 0; i--) execute(negative[i]);
        for (var i = 0; i < positive.length; i++)     execute(positive[i]);
        OnloadScheduler = null;
      }

      function execute(tasks){
        if (tasks){
          for (var i = 0; i < tasks.length; i++) tasks[i]();
        }
      }

      this.schedule = function(task, priority){
        if (!priority) priority = 0;
        if (priority < 0){
          if (negative[-priority]){
            negative[-priority].push(task);
          }else{
            negative[-priority] = [task];
          }
        }else{
          if (positive[priority]){
            positive[priority].push(task);
          }else{
            positive[priority] = [task];
          }
        }
      }

      this.scheduleCode = function(task, priority){
        this.schedule(function(){eval(task)}, priority);
      }

    };