function reset_onclick(x){document.formc.reset();postcode();recalc_onclick('');};function postcode(){};function eequerystring(){var querystring=document.location.search;if(querystring.length>0){variables=(querystring.substring(1)).split("&");var variable;var key;var value;for(var ii=0;ii<variables.length;ii++){variable=variables[ii].split("=");key=unescape(variable[0]);value=unescape(variable[1]);if(document.formc[key]!=null){document.formc[key].value=value;}}}}function initial_update(){postcode('');eequerystring();recalc_onclick('');}