var productSubNavLinks = new Array();

productSubNavLinks[1] = "product_generators.html";
productSubNavLinks[2] = "product_water.html";

var productSubNavArrows = new Array();

for (i=1;i<=2;i++) {
	ind = (i-1)*2;
	productSubNavArrows[ind] = new Image();
	productSubNavArrows[ind].src = "images/nav/product/arrow"+i+"_on.gif";
	productSubNavArrows[ind+1] = new Image();
	productSubNavArrows[ind+1].src = "images/nav/product/arrow"+i+"_off.gif";
}

var productSubNavTitles = new Array();

for (i=1;i<=2;i++) {
	ind = (i-1)*2;
	productSubNavTitles[ind] = new Image();
	productSubNavTitles[ind].src = "images/nav/product/subnav"+i+"_on.gif";
	productSubNavTitles[ind+1] = new Image();
	productSubNavTitles[ind+1].src = "images/nav/product/subnav"+i+"_off.gif";
}

function productSubNav(sec,doc1,doc2,off) {
	ind = (sec-1)*2;
	doc1.src = productSubNavArrows[ind+off].src;
	doc2.src = productSubNavTitles[ind+off].src;
}