browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
if (browserName == "Netscape" && browserVer >= 3) version="n3";
else if (browserName == "Microsoft Internet Explorer" && browserVer >= 3) version="e3";
else version="n2";

window.onload = focusFirst;
submitcount=0;

function img_act(imgName) {
      if (version == "n3" || version == "e3") {
	  document[imgName].src = "customer/s280_commerce/images/" + imgName + "on.gif";
      }
}

function img_inact(imgName) {
      if (version == "n3" || version == "e3") {
	  document[imgName].src = "customer/s280_commerce/images/" + imgName + "off.gif";
      }
}

function focusFirst() {
      if ((document.forms.length > 0) &&
	  (document.forms[0].elements.length > 0))
	for (var i = 0; i < document.forms[0].elements.length; i++) {
	    if ((document.forms[0].elements[i].type == "text") ||
		(document.forms[0].elements[i].type == "textarea")) {
		document.forms[0].elements[i].focus();
		break;
	    }
	}
}

function checkSubmitOnce() {
      if (submitcount == 0) {
          submitcount++;
      	  return true;
      } else {
          alert("This form has already been submitted.  Thanks!");
      	  return false;
      }
}

function checkTextareaLength(textareaObj, maxlength) {
 	if (textareaObj.value.length > maxlength) {
    		alert("Please limit your submission for " + textareaObj.name + " to " + maxlength + " characters.\n(Your submission is " + (textareaObj.value.length - maxlength) + " characters too long.)" );
    		textareaObj.focus();
    		return false;
 	}
 	return true;
}