// Enable disable functions

function enableDate1()
{
document.advanced_search.date1_day.disabled=false;
document.advanced_search.date1_month.disabled=false;
document.advanced_search.date1_year.disabled=false;
}

function enableDate2()
{
document.advanced_search.date2_day.disabled=false;
document.advanced_search.date2_month.disabled=false;
document.advanced_search.date2_year.disabled=false;
}

function disableDate1()
{
document.advanced_search.date1_day.disabled=true;
document.advanced_search.date1_month.disabled=true;
document.advanced_search.date1_year.disabled=true;
}

function disableDate2()
{
document.advanced_search.date2_day.disabled=true;
document.advanced_search.date2_month.disabled=true;
document.advanced_search.date2_year.disabled=true;
}