function getObjRef(obj){if(document.getElementById){return document.getElementById(obj);}else if(document.all){return document.all[obj];}else{return null;}}
var currentSub=0;function showSubMenu(subNo){for(n=1;n<=7;n++){menuItem=getObjRef('subNav'+n);if(menuItem){if(n==subNo){menuItem.className='subNav';}else{menuItem.className='invisible';}}}}
function hideSubMenu(subNo){getObjRef('subNav'+subNo).className='invisible';}
function fillSearchDefaultText(){getObjRef('postcode').value="Enter postcode";}