selval = new Array(7);
selval[0] = "durango.htm";
selval[1] = "zihua.htm";
selval[2] = "bara.htm";
selval[3] = "pv.htm";
selval[4] = "pv2.htm";
selval[5] = "miguel.htm";
selval[6] = "../xxx.htm";

function gonext(idx)
{	var ix1 = idx;
	if (ix1 < 0) {ix1 = document.selform.select1.selectedIndex;}

	top.location = selval[ix1];
}