function preloadMoreImages() {
if (document.images)
	{
	/*var btn_historians_roll = new Image
		btn_historians_roll.src = "images/btn_historians_over.gif"
	var btn_namingpeoples_roll = new Image
		btn_namingpeoples_roll.src = "images/btn_namingpeoples_over.gif"
	var btn_datingtraditions_roll = new Image
		btn_datingtraditions_roll.src = "images/btn_datingtraditions_over.gif"
	var btn_changingstory_roll = new Image
		btn_changingstory_roll.src = "images/btn_changingstory_over.gif"
	var btn_regional_roll = new Image
		btn_regional_roll.src = "images/btn_regional_over.gif"
	var btn_studymounds_roll = new Image
		btn_studymounds_roll.src = "images/btn_studymounds_over.gif"
	var btn_plantsanimals_roll = new Image
		btn_plantsanimals_roll.src = "images/btn_plantsanimals_over.gif"
	var btn_rockshelters_roll = new Image
		btn_rockshelters_roll.src = "images/btn_rockshelters_over.gif"
	var btn_ancientprairies_roll = new Image
		btn_ancientprairies_roll.src = "images/btn_ancientprairies_over.gif"
	var btn_pointstyles_roll = new Image
		btn_pointstyles_roll.src = "images/btn_pointstyles_over.gif"
	var btn_sitedestruction_roll = new Image
		btn_sitedestruction_roll.src = "images/btn_sitedestruction_over.gif"
	var btn_context_roll = new Image
		btn_context_roll.src = "images/btn_context_over.gif"
	var btn_challenges_roll = new Image
		btn_challenges_roll.src = "images/btn_challenges_over.gif"
	var btn_diffvoices_roll = new Image
		btn_diffvoices_roll.src = "images/btn_diffvoices_over.gif"
	var btn_archaeologists_roll = new Image
		btn_archaeologists_roll.src = "images/btn_archaeologists_over.gif"*/
	}
}