function onShow(pubName, imgNumber, width, height) {
  if (document.images) {
       imgTag        = document['img_' + pubName];
       imgTag.src    = "photos/thumb-" + imgNumber + ".jpg"
       var agent = navigator.userAgent.toLowerCase();
       if (agent.indexOf("msie") != -1) {
           imgTag.width = width;
           imgTag.height = height;
         } 
    }
}

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) { //v4.0
  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 && document.getElementById) x=document.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 MM_validateForm() { //v4.0
  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=MM_findObj(args[i]);
    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+='- '+nm+' must contain an e-mail address.\n';
      } else if (test!='R') {
        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 (val<min || max<val) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
  } if (errors) alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function showLink(pageUrl) {
  alert("shoelink");
  linkFrame   = document('linkframe');
  reviewTable = document('review');

  reviewTable.style="visibility: hide; display: none";
  linkFrame.src = pageUrl;  
  linkFrame.style="visibility: show; display: inline";
}

function showReview() {
  alert("shoereview");
  linkFrame   = document('linkframe');
  reviewTable = document('review');

  reviewTable.style="visibility: show; display: inline";
  linkFrame.style="visibility: hide; display: none";

}


function ChkEmail(str) {
  var pattern = /^[\w-_.]*[\w-_.]@[\w].+[\w]+[\w]$/i;
  return pattern.test(str);
} 


function exists(userEntry) {

 var aCharExists = 0;
 var entry=userEntry;

	 if(entry) {
		 for (var i=0; i<entry.length; i++) {
		 if (entry.charAt(i) !="") {
		 aCharExists=1;
		 }
	 }
 }

 if(!aCharExists) {
 return 0;
 }

 return 1;
}



 function validateForm() {

 var fixThis = "";

 if(!(exists(document.pubs.userName.value))) {
 fixThis += "Please enter your name.\n"
 }

 if (!(ChkEmail(document.pubs.email.value))||(document.pubs.email.value == ""))
    {
    fixThis += "Please enter a valid email address.\n";
    } 
    

 if (fixThis !="") {
 alert(fixThis);

 } else {

 document.pubs.submit();
 }
 }