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 stripSpaces(x) {
    while (x.substring(0,1) == ' ') x = x.substring(1);
    while (x.substring(x.length-1,x.length) == ' ') x = x.substring(0,x.length-1);
    return x
}

function MM_validateForm() { //v4.0
   // 'isEmail'
   // 'inRange1:1000' check for numbers within stated range
   // '' check for numbers
   // 'R' can be included at beginning of field to indicate field is required

  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;

  for (i=0; i<(args.length-2); i+=3) { 

    test=args[i+2];
    val_name=args[i+1];
    val=MM_findObj(args[i]);
    val.value = stripSpaces(val.value);

    if (val) { 
      nm=val.name; 
      if ((val=val.value)!="") {
        if (test.indexOf('isEmail')!=-1) { 

          p=val.indexOf('@');
          if (p<1 || p==(val.length-1)) 
            errors+='- '+val_name+' must contain an e-mail address.\n';

        } else if (test!='R') { 

          num = parseFloat(val);

          if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
          if (test.indexOf('inRange') != -1) { 
            p=test.indexOf(':');
            min=test.substring(8,p); max=test.substring(p+1);
            if (num<min || max<num)
               errors+='- '+val_name+' must contain a number between '+min+' and '+max+'.\n';
          }
        }
      } else if (test.charAt(0) == 'R') 
        errors += '- '+val_name+' is required.\n'; 
    }
  } 

  if (errors) alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}