var changeMade = false;

function HaveAll(form)
{
    var checked = form.HaveAllItems.checked;
    changeMade = true;

    for(var i = 0; i < form.length; i++) {
        var e = form.elements[i];
        if (e.type == "checkbox" && e.name == "have") {
           e.checked = checked;
        }
    }
}

function WantAll(form)
{
    var checked = form.WantAllItems.checked;
    changeMade = true;

    for(var i = 0; i < form.length; i++) {
        var e = form.elements[i];
        if (e.type == "checkbox" && e.name == "want") {
           e.checked = checked;
        }
    }
}

function checkForChanges(moveOn)
{
    if (changeMade)
    {
        if (confirm("Continue without saving changes?"))
        {
            location = moveOn;
        }
    }
    else
    {
        location = moveOn;
    }
}

// check form is not default "sorty by" option
function valForm() {

	if(document.browseForm.orderBy.selectedIndex < 1)
		return false;
	else
		document.browseForm.submit();
}