jQuery.preloadImages = function()
{
  for(var i = 0; i<arguments.length; i++)
  {
    jQuery("<img>").attr("src", arguments[i]);
  }
 
}

$.preloadImages(
	"images/nav_item01-active.png",
	"images/nav_item02-active.png",
	"images/nav_item03-active.png",
	"images/nav_item04-active.png",
	"images/nav_item05-active.png",
	"images/nav_item06-active.png",
	"images/nav_item07-active.png",

	"images/nav_item02_sub01-active.png",
	"images/nav_item02_sub02-active.png",
	"images/nav_item02_sub03-active.png",
	"images/nav_item02_sub04-active.png",
	"images/nav_item02_sub05-active.png",
	
	"images/nav_item03_sub01-active.png",
	"images/nav_item03_sub02-active.png",
	"images/nav_item03_sub03-active.png",
	"images/nav_item03_sub04-active.png",
	"images/nav_item03_sub05-active.png"

);