function checkrequired(which){
var pass=true
if (document.images){
for (i=0;i<which.length;i++){
var tempobj=which.elements[i]
if (tempobj.name.substring(0,8)=="required"){
if (((tempobj.type=="text"||tempobj.type=="textarea")&&tempobj.value=='')||(tempobj.type.toString().charAt(0)=="s"&&tempobj.selectedIndex==-1)){
pass=false
break
}
}
}
}
if (!pass){
alert("Please enter your landline telephone number and a valid email address, then resubmit. (If you do not have an email address, please enter n@a.co.uk - Your personal details are never passed to third parties or organisations.)")
return false
}
else
return true
}