function st_search_fun()
{
var st = 'Smart Search';
var tst = document.m_ad_search.st_search.value;

if(tst == '' || tst == 'Smart Search')
{
 document.m_ad_search.st_search.value = st;
}
}

function st_search_click()
{
var tst = document.m_ad_search.st_search.value;
if(tst == 'Smart Search')
{
 document.m_ad_search.st_search.value = '';
} 
}