function ShowImage(strImagePath)
{
	var ShowImageWin;
	var strName =  "ShowImages"
	var strFeatures;
	strImagePath ="ShowImage.html?Image=" + strImagePath
	strFeatures = "dependent=yes,directories=no,location=no,menubar=no,resizable=yes,personalbar=no,scrollbars=no,titlebar=no,toolbar=no,top=50, left=50, width=400, height=300"
	ShowImageWin = window.open(strImagePath, null, strFeatures);
	ShowImageWin.focus();

	return false;
}

function ShowImage2(strImagePath,winWidth,winHeight)
{
	var ShowImageWin;
	var strName =  "ShowImages"
	var strFeatures;
	strImagePath ="ShowImage2.html?Image=" + strImagePath + "&Width=" + winWidth + "&Height=" + winHeight
	strFeatures = "dependent=yes,directories=no,location=no,menubar=no,resizable=yes,personalbar=no,scrollbars=no,titlebar=no,toolbar=no,top=50, left=50, width="+winWidth+",height="+winHeight+""
	ShowImageWin = window.open(strImagePath, null, strFeatures);
	ShowImageWin.focus();

	return false;
}

function isBlank(checkval) {
	NotNullString = true;
	for (i=0;i<checkval.length;i++) {
		if (checkval.charAt(i) != " ") {
			NotNullString = false;
			break;
		}
	}
	return NotNullString;
}

function validateForm() { //v4.0
	 	theForm = document.form1;
		if(isBlank(theForm.review.value)){
			theForm.review.focus();
			alert("Please fill in your comment") ;
			return false;
		}
		else
			return true;
	
}



<!--
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_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 == '');
}
//-->