var supported = (window.Option) ? 1 : 0;


function get_items(form) {
if (!supported) {
	load(form, "case_type");
	return;
}

if (form.case_type.selectedIndex == 0) {
	document.casefinder.action = "/shipping/shipfinder.php";
	document.casefinder.submit();
}

var options = form.item_type.options;
for (var i = options.length - 1; i > 0; i--) {
	options[i] = null;
}

var curAr = ar[form.case_type.selectedIndex];
for (var j = 0; j < curAr.length; j++) {
	options[j] = new Option(curAr[j].item_type);
}
options[0].selected = true;
get_mfgr(form);
} // end get_items


function get_mfgr(form) {
if (!supported) {
	load(form, "case_type");
	return;
}

var options = form.mfgr.options;
for (var i = options.length - 1; i >= 0; i--) {
	options[i] = null;
}

var curAr = arp[form.case_type.selectedIndex][form.item_type.selectedIndex];
for (var j = 0; j < curAr.length; j++) {
	options[j] = new Option(curAr[j].item_type);
}

if (options[0] != null) options[0].selected = true;
get_series(form);
} // end get_mfgr


function get_series(form) {
if (!supported) {
	load(form, "case_type");
	return;
}

var options = form.series.options;
for (var i = options.length - 1; i >= 0; i--) {
	options[i] = null;
}

var curAr = arm[form.case_type.selectedIndex][form.item_type.selectedIndex][form.mfgr.selectedIndex];
if (curAr != null)
	for (var j = 0; j < curAr.length; j++) {
	options[j] = new Option(curAr[j].item_type);
}
if (options[0] != null) options[0].selected = true;
get_model(form);
} // end get_series


function get_model(form) {
if (!supported) {
	load(form, "case_type");
	return;
}

var options = form.model.options;
for (var i = options.length - 1; i >= 0; i--) {
	options[i] = null;
}

if (ari[form.case_type.selectedIndex][form.item_type.selectedIndex] == null) {
	set_questions(form);
	return;
}

if (ari[form.case_type.selectedIndex][form.item_type.selectedIndex][form.mfgr.selectedIndex] == null) {
	set_questions(form);
	return;
}

if (ari[form.case_type.selectedIndex][form.item_type.selectedIndex][form.mfgr.selectedIndex][form.series.selectedIndex] == null) {
	set_questions(form);
	return;
}

var curAr = ari[form.case_type.selectedIndex][form.item_type.selectedIndex][form.mfgr.selectedIndex][form.series.selectedIndex];
if (curAr != null)
for (var j = 0; j < curAr.length; j++) {
	options[j] = new Option(curAr[j].item_type);
}
if (options[0] != null) options[0].selected = true;
set_questions(form);
} // end get_model


function set_questions(form) {
//alert("just entered set questions");

document.images[3].src="/images/blank.gif";
document.images[4].src="/images/blank.gif";
document.images[5].src="/images/blank.gif";
document.images[6].src="/images/blank.gif";
//alert ("about to switch");

switch(form.case_type.selectedIndex) {
	case 3:
	// questions for computers
	document.images[3].src = "/images/quesb1.gif";
	document.images[4].src = "/images/quesc1.gif";

	switch(form.item_type.selectedIndex) {
		case 0:
		document.images[5].src = "/images/quesd1c.gif";
		document.images[6].src = "/images/quese1c.gif";
		break;
		case 1: 
		document.images[5].src = "/images/quesd1.gif";
		document.images[6].src = "/images/quese1.gif";
		break;
		case 2:
		document.images[5].src = "/images/quesd1p.gif";
		document.images[6].src = "/images/quese1p.gif";
		break;
	} // end inner switch
	break;
	case 2:
	// laptop questions
	document.images[3].src = "/images/quesb2.gif";
	if (form.item_type.selectedIndex == 0) {
		document.images[4].src = "/images/quesc2m.gif";
	} else {
		document.images[4].src = "/images/quesc2s.gif";
	}// end if
	break;
	case 0:
	// shipping questions
	document.images[3].src = "/images/quesb3.gif";
	if (form.item_type.selectedIndex == 2) {
//note
		document.images[4].src = "";
	} // end if
	break;
	case 1:
	// rackmount questions
	document.images[3].src = "/images/quesb5.gif";
	document.images[4].src = "/images/quesc5.gif";
	break;
	case 8:
	// tool cases question
	document.images[3].src = "/images/quest1.gif";
	break;
	case 9:
	// graphics cases question
	document.images[3].src = "/images/quesg.gif";
	document.images[4].src = "/images/quesg2.gif";
	break;
	case 4:
	// military questions
	document.images[3].src = "/images/quesa.gif";
	switch(form.item_type.selectedIndex) {
		case 3:
		// laptop questions
		document.images[4].src = "/images/quesb2.gif";
		if (form.mfgr.selectedIndex == 0) {
			document.images[5].src = "/images/quesc2m.gif";
		}
		break;
		case 5:
		//shipping case finder
		document.casefinder.action = "/shipping/shipfinder.php?t=m";
		document.casefinder.submit();
		break;		
		case 2:
		// computer questions 
		document.images[4].src = "/images/quesc1.gif";
		document.images[5].src = "/images/quesd1c.gif";
		document.images[6].src = "/images/quese1c.gif";
		break;
	} // end inner switch
	break;
} // end outer switch	
		
} // end set_questions