function focus_hs() {
	document.getElementById("hsLink").src="/rsc/img/sort/nav02_over.jpg";
}
function unfocus_hs() {
	document.getElementById("hsLink").src="/rsc/img/sort/nav02.jpg";
}
function focus_ps() {
	document.getElementById("psLink").src="/rsc/img/sort/nav03_over.jpg";
}
function unfocus_ps() {
	document.getElementById("psLink").src = "/rsc/img/sort/nav03.jpg";
}
function focus_cs() {
	document.getElementById("csLink").src="/rsc/img/sort/nav04_over.jpg";
}
function unfocus_cs() {
	document.getElementById("csLink").src="/rsc/img/sort/nav04.jpg";
}
function focus_bc() {
	document.getElementById("bcLink").src="/rsc/img/sort/nav05_over.jpg";
}
function unfocus_bc() {
	document.getElementById("bcLink").src="/rsc/img/sort/nav05.jpg";
}

function hs_hover() {
	unfocus_ps();
	focus_hs();
}
function ps_hover() {
	unfocus_hs();
	unfocus_cs();
	focus_ps();
}
function cs_hover() {
	unfocus_ps();
	unfocus_bc();
	focus_cs();
}
function bc_hover() {
	unfocus_cs();
	focus_bc();
}
function unfocusAll() {
	unfocus_hs();
	unfocus_ps();
	unfocus_cs();
	unfocus_bc();
}