var imgs = [
	['images/left_01.gif', 'images/left_01_.gif', 'about'],
	['images/left_02.gif', 'images/left_02_.gif', 'list'],
	['images/left_03.gif', 'images/left_03_.gif', 'local'],
	['images/left_04.gif', 'images/left_04_.gif', 'member'],
	['images/left_05.gif', 'images/left_05_.gif', 'policies'],
	['images/left_06.gif', 'images/left_06_.gif', 'contact'],
	['images/top_02.gif', 'images/top_02_.gif', 'listing'],
	['images/top_06.gif', 'images/top_06_.gif', 'exposure'],
	['images/search_06.gif', 'images/search_06_.gif', 'free']
] ;

for (var i = 0 ; i < imgs.length ; i++) {
	var obj = new Image () ;
		obj.src = imgs [i][1] ;
}

function chgImg (_num, _state) {
	eval ("document.images." + imgs [_num][2] + ".src = '" + imgs [_num][_state] + "'") ;
}