/*window.onload = function () {
document.getElementById('ft_s_f').onfocus = function(){hv('ft_s_f');};
document.getElementById('nav_s_f').onfocus = function(){hv('nav_s_f');};
}*/
document.onclick=check;

function hv(field) {
  var field = document.getElementById(field);
  if (field.value == 'Enter your query...') {
    field.value   = '';
    field.onfocus = '';
    }
  }

function menu_action(mouse)
{
	var obj = document.getElementById('drop3');

	if (mouse=='out' && obj.style.visibility=='visible') { obj.style.visibility='hidden'; }
	else obj.style.visibility='visible';
}

function check(e) {
	
	var target = (e && e.target) || (event && event.srcElement);
	var obj = document.getElementById('drop3');
	var obj2 = document.getElementById('drop');

	if ((target==obj2) && (obj.style.visibility!='visible')) {
		obj.style.visibility='visible';
	}
	else {
		if (obj.style.visibility=='visible') { obj.style.visibility='hidden'; }
	}
	if (target==obj2) return false;
}

function activate(link_id)
{ 
  if(link_id=='linka'||link_id=='linkb'||link_id=='linkc')
  {
    if(document.getElementById('linka'))document.getElementById('linka').className = '';
    if(document.getElementById('linkb'))document.getElementById('linkb').className = '';
    if(document.getElementById('linkc'))document.getElementById('linkc').className = '';
  }
  else
  {
    if(document.getElementById('link1'))document.getElementById('link1').className = '';
    if(document.getElementById('link2'))document.getElementById('link2').className = '';
    if(document.getElementById('link3'))document.getElementById('link3').className = '';
    if(document.getElementById('link4'))document.getElementById('link4').className = '';
  }
  if(document.getElementById(link_id))document.getElementById(link_id).className = 'act';
} //end function activate(link_id)