function toggle_visibility(id) {
       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
    }

function clearForms()
{
  var i;
  for (i = 0; (i < document.forms.length); i++) {
    document.forms[i].reset();
  }
}

function UncheckAll(){
count = document.frm.elements.length;
    for (i=0; i < count; i++) 
	{
    if(document.frm.elements[i].checked == 1)
    	{document.frm.elements[i].checked = 0; }
    else {document.frm.elements[i].checked = 1;}
	}
}