r1 = new Image(1,0); 
r1.src ="images/menu_hom.gif";
r1_over = new Image(1,1); 
r1_over.src="images/menu_hom_s.gif";

r2 = new Image(1,0); 
r2.src ="images/menu_int.gif";
r2_over = new Image(1,1); 
r2_over.src="images/menu_int_s.gif";

r3 = new Image(1,0); 
r3.src ="images/menu_ct.gif";
r3_over = new Image(1,1); 
r3_over.src="images/menu_ct_s.gif";

r4 = new Image(1,0); 
r4.src ="images/menu_pro.gif";
r4_over = new Image(1,1); 
r4_over.src="images/menu_pro_s.gif";

r5 = new Image(1,0); 
r5.src ="images/menu_exc.gif";
r5_over = new Image(1,1); 
r5_over.src="images/menu_exc_s.gif";

r6 = new Image(1,0); 
r6.src ="images/menu_hot.gif";
r6_over = new Image(1,1); 
r6_over.src="images/menu_hot_s.gif";

r7 = new Image(1,0); 
r7.src ="images/menu_ven.gif";
r7_over = new Image(1,1); 
r7_over.src="images/menu_ven_s.gif";

r8 = new Image(1,0); 
r8.src ="images/menu_key.gif";
r8_over = new Image(1,1); 
r8_over.src="images/menu_key_s.gif";

r9 = new Image(1,0); 
r9.src ="images/menu_pre.gif";
r9_over = new Image(1,1); 
r9_over.src="images/menu_pre_s.gif";

r10 = new Image(1,0); 
r10.src ="images/menu_poc.gif";
r10_over = new Image(1,1); 
r10_over.src="images/menu_poc_s.gif";

r11 = new Image(1,0);
r11.src ="images/menu_con.gif";
r11_over = new Image(1,1);
r11_over.src="images/menu_con_s.gif";

r12 = new Image(1,0); 
r12.src ="images/menu_cp.gif";
r12_over = new Image(1,1); 
r12_over.src="images/menu_cp_s.gif";

r13 = new Image(1,0); 
r13.src ="images/menu_aut.gif";
r13_over = new Image(1,1); 
r13_over.src="images/menu_aut_s.gif";

function chGraphic(imgModule,imgObject)
{
document.images[imgModule].src = eval(imgObject + ".src");
}

function preloadImages()
{   
if (document.images)
{
var imgFiles = preloadImages.arguments;
if (document.preloadArray==null) document.preloadArray = new Array();
var i = document.preloadArray.length;
with (document) for (var j=0; j<imgFiles.length; j++)
if (imgFiles[j].charAt(0)!="#")
{      
preloadArray[i] = new Image;
preloadArray[i++].src = imgFiles[j];
}
}
}