var Images_array = new Array('menu_1.gif', 'menu_2.gif', 'menu_3.gif', 'menu_4.gif', 'menu_5.gif', 'menu_6.gif');
var Sel_Images_array = new Array('menu_1_sel.gif', 'menu_2_sel.gif', 'menu_3_sel.gif', 'menu_4_sel.gif', 'menu_5_sel.gif', 'menu_6_sel.gif');
var Images = [];
var Sel_Images = [];

for (var i=0; i<Images_array.length; i++)
{
	Images[i] = new Image();
	Sel_Images[i] = new Image();
	Images[i].src = "images/"+Images_array[i];
	Sel_Images[i].src = "images/"+Sel_Images_array[i];
}

function img_flat(cur_img, isflat, num)
{
 cur_img.src = (isflat) ? Sel_Images[num].src : Images[num].src;
}