function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function valRegisterFrm(){
  if((!frm.password1.value) ||(frm.password1.value) != (frm.password2.value)){
    alert("Please ensure both password fields contain the same value!");
	frm.password1.focus();
	return false;
   }else if(!frm.username.value){
    alert("Please enter a username.");
	frm.username.focus();
	return false;
  }else if(!frm.title.value){
    alert("Please select a title.");
	frm.title.focus();
	return false;
  }else if(!frm.firstname.value){
    alert("Please enter your first name.");
	frm.firstname.focus();
	return false;
  }else if(!frm.surname.value){
    alert("Please enter your surname.");
	frm.surname.focus();
	return false;
  }else if(!frm.dob.value){
    alert("Please enter your date of birth");
	frm.dob.focus();
	return false;
  }else if(!frm.address1.value){
    alert("Please enter your address");
	frm.address1.focus();
	return false;
  }else if(!frm.town.value){
    alert("Please enter a town");
	frm.town.focus();
	return false;
  }else if((!frm.county.value) || (frm.county.value == "Co.")){
    alert("Please enter a county");
	frm.county.focus();
	return false;
  }else if(!frm.postcode.value){
    alert("Please enter a postcode");
	frm.postcode.focus();
	return false;
  }else if(!frm.phone.value){
    alert("Please enter your phone number");
	frm.phone.focus();
	return false;
  }else if(!frm.surgery.value){
    alert("Please select a surgery");
	frm.surgery.focus();
	return false;
  }else{
    return valEmail();
  }
}

function valRegisterEditFrm(){
  if((!frm.password1.value) ||(frm.password1.value) != (frm.password2.value)){
    alert("Please ensure both password fields contain the same value!");
	frm.password1.focus();
	return false;

  }else if(!frm.dob.value){
    alert("Please enter your date of birth");
	frm.dob.focus();
	return false;
  }else if(!frm.address1.value){
    alert("Please enter your address");
	frm.address1.focus();
	return false;
  }else if(!frm.town.value){
    alert("Please enter a town");
	frm.town.focus();
	return false;
  }else if((!frm.county.value) || (frm.county.value == "Co.")){
    alert("Please enter a county");
	frm.county.focus();
	return false;
  }else if(!frm.postcode.value){
    alert("Please enter a postcode");
	frm.postcode.focus();
	return false;
  }else if(!frm.phone.value){
    alert("Please enter your phone number");
	frm.phone.focus();
	return false;
  }else if(!frm.surgery.value){
    alert("Please select a surgery");
	frm.surgery.focus();
	return false;
  }else{
    return valEmail();
  }
}

function valLoginFrm(){
  if(!frm.password.value){
    alert("Please enter a password.");
	frm.password.focus();
	return false;
  }else if(!frm.username.value){
    alert("Please enter a username.");
	frm.username.focus();
	return false;
  }
}
function valEmail(){
  var userEmail = frm.email.value;
  var atLoc = userEmail.indexOf("@",1);
  var dotLoc = userEmail.indexOf(".",atLoc+2);
  var len = userEmail.length;
  if((atLoc>0)&&(dotLoc>0)&&(len>dotLoc+2)){
    return true;
  }else{
    alert("Please enter a valid email address");
    frm.email.focus();
    return false;
  }
}

function valOrderFrm(){
  if(!frm.order.value){
    alert("Please enter your prescription details.");
	frm.order.focus();
	return false;
  }else if(!frm.delivered.value){
    alert("Please indicate whether you would like your prescription delivered or not.");
	frm.delivered.focus();
	return false;
  }else if(!frm.terms.checked){
    alert("To submit your prescription order you must read and agree to our terms. Please tick the box if you do.");
	frm.terms.focus();
	return false;
  }else{
    return true;
  }
}

function clearSearch(){
	if(frmSearch.keyword.value = "Search Here"){
		frmSearch.keyword.value = "";
	}
}