var navimg1, navimg2, navimg3, navimg4;
if (document.images)
{
navimg1 = new Image(182,185);
navimg2 = new Image(182,185);
navimg3 = new Image(182,185);
navimg4 = new Image(182,185);
navimg1.src = '/images/nav/pro_2.png';
navimg2.src = '/images/nav/pro_2_1.png';
navimg3.src = '/images/nav/pro_2_2.png';
navimg4.src = '/images/nav/pro_2_3.png';
}
function changeNavImg(num)
{
var navimg = document.getElementById("id_nav");
switch (num)
{
default:
case 1:
navimg.src = navimg1.src;
break;
case 2:
navimg.src = navimg2.src;
break;
case 3:
navimg.src = navimg3.src;
break;
case 4:
navimg.src = navimg4.src;
break;
}
}
document.write(' ');
