schedule("searchField", initSearchField);
schedule("year", initYear);

function initSearchField()
{
    var searchField = document.getElementById("searchField");
    var searchForms = document.getElementById("publicationSearch");
	var searchNews = document.getElementById("searchNews");
    
    searchField.onfocus = onclickSearchField;
	if ( searchForms != null )
    {
        searchForms.onfocus = onclickSearchField;
    }
    if ( searchNews != null )
	{
		searchNews.onfocus = onclickSearchField;
	}
	
    return true;
}


function onclickSearchField()
{
    if (this.value.toLowerCase() == "keyword")
    {
        this.value = "";
        this.className = "active";
    }
    
    return true;
}


// Activate month if the year a year been selected, Deactivate it if ALL is selected.
function initYear()
{
	if (document.getElementById('year'))
	{
		document.getElementById('year').onchange = enableMonth;
	}
}

function enableMonth()
{
	if(this.options.selectedIndex == 0)
	{
		if (document.getElementById('month'))
		{
			document.getElementById('month').disabled = true;
		}
	} else {
		if (document.getElementById('month'))
		{
			document.getElementById('month').disabled = false;
		}
	}
}