// javascript functions
<!--
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_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_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 checkForm(form) {
  var s = form.size.value; if (s == '0') {
    alert("Please select your ring size.");
    return false;
  } else {
    var amp = s.indexOf('&');
	if (amp >= 0) {
      a = s.split('&'); form.os0.value = a[0]; form.amount.value = a[1];
      if (form.metal) { 
         p = form.metal.value.charAt(0);
         if (p == 9) form.amount.value = (form.amount.value * 2);
      }
      // debug: 
      // alert("item = "+form.item_name.value+"\n"+"size = "+form.os0.value+"\n"+"price = $"+form.amount.value);return false;
    } else if (form.metal) {
      m = form.metal.value; b = m.split('&'); form.os0.value = s; form.os1.value = b[0]; form.amount.value = b[1];
      // debug: 
      // alert("item = "+form.item_name.value+"\n"+"size = "+form.os0.value+"\n"+"metal = "+form.os1.value+"\n"+"price = $"+form.amount.value);return false;
    }
  }
}

function preview(x) {
  link = ("preview.html?" + x);
  prev = window.open(link,"preview","toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=yes");
  if (link) prev.focus();
}
//-->