This is what I've tried so far, but it just shows all the elements at once:
i1 = document.getElementById('img_1');
i2 = document.getElementById('img_2');
i3 = document.getElementById('img_3');
i4 = document.getElementById('img_4');
i5 = document.getElementById('img_5');
myarr = [i1,i2,i3,i4,i5];
for (i=0; i<myarr.length;i++) {
$(myarr[i]).show().delay(5000).fadeOut();
}