function addLoadEvent(func) {
  //http://www.sitepoint.com/blogs/2004/05/26/closures-and-executing-javascript-on-page-load/
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}
function set_pic(){
	$("#main_image").attr("src",pic_array[current_pic]);
}
function fade_in(){
	$("#main_image").fadeIn();
}
function next_pic(){
	current_pic++;
	if(current_pic>pic_count)current_pic=0;
	var image1 = $('<img />').attr('src', pic_array[current_pic]); //preload the next image
	$("#main_image").fadeOut();
	setTimeout("set_pic();", 500);
	setTimeout("fade_in();",500);
	setTimeout("next_pic();", 5000);
}
addLoadEvent(function() {
	setTimeout( "next_pic();", 5000); 
});