if (document.images) {
	menuitem1_over = new Image()
	menuitem1_over.src = "graphics/navi/menu1_over.gif"
	menuitem1_out = new Image()
	menuitem1_out.src = "graphics/navi/menu1_out.gif"
	menuitem2_over = new Image()
	menuitem2_over.src = "graphics/navi/menu2_over.gif"
	menuitem2_out = new Image()
	menuitem2_out.src = "graphics/navi/menu2_out.gif"
	menuitem3_over = new Image()
	menuitem3_over.src = "graphics/navi/menu3_over.gif"
	menuitem3_out = new Image()
	menuitem3_out.src = "graphics/navi/menu3_out.gif"
	menuitem4_over = new Image()
	menuitem4_over.src = "graphics/navi/menu4_over.gif"
	menuitem4_out = new Image()
	menuitem4_out.src = "graphics/navi/menu4_out.gif"
	menuitem5_over = new Image()
	menuitem5_over.src = "graphics/navi/menu5_over.gif"
	menuitem5_out = new Image()
	menuitem5_out.src = "graphics/navi/menu5_out.gif"
}
// onMouseOver
function over(imgname) {
  if (document.images) {
	document.images[imgname].src = eval(imgname + "_over.src");
  }
}
// onMouseOut
function out(imgname) {
	if (document.images) {
	document.images[imgname].src = eval(imgname + "_out.src");
	}
}