// JavaScript Document
startList = function() {
if (document.all&&document.getElementById) {
navRoot = document.getElementById("nav");
for (i=0; i<navRoot.childNodes.length; i++) {
node = navRoot.childNodes[i];
if (node.nodeName=="LI") {
node.onmouseover=function() {
this.className+=" over";
  }
  node.onmouseout=function() {
  this.className=this.className.replace(" over", "");
   }
   }
  }
 }
}
window.onload=startList;

function chkArea(taa,tab,tac) {
var rks=1;
if (taa.value!="" && tab.value!="") {
rks=0;
}
if (taa.value=="" && tab.value!="") {
rks=0;
}
if (taa.value!="" && tab.value=="") {
rks=0;
}
if (taa.value=="" && tab.value=="postcode") {
rks=1;
}
if (taa.value=="town/city" && tab.value=="") {
rks=1;
}

if (rks==0) {  
tac.disabled=false;
} else {
tac.disabled=true;
}

}