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) { //v4.01
  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 toggleLayer(objectID) {
	if (isAll || isID) {
		domStyle = findDOM(objectID,1);
		if (domStyle.display =='block')  domStyle.display='none';
		else domStyle.display='block';
	}
	else {
		destination = objectID + '.html';
		self.location = destination;
	}
	return;
}
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
function MM_jumpMenuGo(selName,targ,restore){ //v3.0
  var selObj = MM_findObj(selName); if (selObj) MM_jumpMenu(targ,selObj,restore);
}

function jumpMenu(targ,selObj,restore){ //v3.0
	if(selObj.options[selObj.selectedIndex].value == '/school_pdf/pepsi_school_products.pdf'){
		document.location = '/school_pdf/pepsi_school_products.pdf';
	}else{
			
	  window.open(selObj.options[selObj.selectedIndex].value);
	}
  if (restore) selObj.selectedIndex=0;
}
function jumpMenuGo(selName,targ,restore){ //v3.0
  var selObj = MM_findObj(selName); 
  if (selObj) jumpMenu(targ,selObj,restore);
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
<!------------------- AJAX FUNCTIONS ------------------------->
//populate a drop down
function loadSelect(selectId,optionText,optionVal){
	var newElem = document.createElement("OPTION");
	newElem.setAttribute("value", optionVal);
	var newText = document.createTextNode(unescape(optionText.replace(/\+/g, " ")));
	newElem.appendChild(newText);
	document.getElementById(selectId).appendChild(newElem);
}

//clear all drop down contents
function clearSelect(selectId){
	document.getElementById(selectId).options.length = 0;
}

//given a search value, set the selected index to that value; if not found use default key supplied
function setOptionKeyByVal(selectToSearch, valToFind, defaultKey){
	for (i=0;i<document.getElementById(selectToSearch).options.length;i++){
		if (document.getElementById(selectToSearch).options[i].value == valToFind) {
			document.getElementById(selectToSearch).options[i].selected = true;
			return;
		}
	}
	document.getElementById(selectToSearch).options[defaultKey].selected = true;
}

function check_for_int() {
  // only allow numbers to be entered
  var checkOK = "0123456789";
  var checkStr = document.getElementById('custom_size').ounces.value;
  var allValid = true;
  var allNum = "";
  for (i = 0;  i < checkStr.length;  i++) {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
    if (ch == checkOK.charAt(j))
    break;
    if (j == checkOK.length) {
      allValid = false;
      break;
    }
    if (ch != ",")
    allNum += ch;
  }
  if (!allValid) {
    alert("Please enter only numbers for ounces.");
    document.getElementById('custom_size').ounces.value = '';
    document.getElementById('custom_size').ounces.focus();
    return (false);
  }
}

<!------------------- END AJAX FUNCTIONS --------------------->