function formClearField(obj,val)
{
   if (obj.value==val) obj.value='';
}

var lstSelected=new Array();

function toggleLayer(_w) {

   var isIE=document.all?true:false;
   var isDOM=document.getElementById?true:false;
   var isNS4=document.layers?true:false;
   var _h='s';

   if (lstSelected[_w]=='s') { _h='h'; lstSelected[_w]='h'; } else { _h='s'; lstSelected[_w]='s'; }

  if (isDOM)
  {
    if (_h=='s') { document.getElementById(_w).style.display = 'block'; document.getElementById(_w).style.visibility='visible'; }
    if (_h=='h') { document.getElementById(_w).style.display = 'none'; document.getElementById(_w).style.visibility='hidden'; }
  }
  else if (isIE) {
    if (_h=='s') { eval("document.all."+_w+".style.display='block';"); eval("document.all."+_w+".style.visibility='visible';"); }
    if (_h=='h') { eval("document.all."+_w+".style.display='none';"); eval("document.all."+_w+".style.visibility='hidden';"); }
  }
  else if(isNS4)
  {
    if (_h=='s') { eval("document.layers['"+_w+"'].display='block';"); eval("document.layers['"+_w+"'].visibility='show';"); }
    if (_h=='h') { eval("document.layers['"+_w+"'].display='none';"); eval("document.layers['"+_w+"'].visibility='hide';"); }
  }
}