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 submitSearch(f, autoSubmit){
    var retVal = true;
	if (f.txtsearch.value.length < 3){
		alert('please enter a valid search string longer than 2 characters.');
		retVal = false;
	}
	if(retVal==true && autoSubmit==true)
	    f.submit();
    else
	    return retVal;
}

function clearSearchText(){
	document.frmsearchitem.txtsearch.value = ""
}

function login(f){
	if (f.txtEmailAddress.value.length == '') {
		alert('please enter a valid email address before continuing.');
		return false;
	}
	if (f.txtpassword.value.length < 5) {
		alert('please enter a valid password longer than 5 characters.');
		return false;
	}
	return true;
}

function IsValidField(field) {
	var strValue = field.value;
	if (IsNumeric(strValue) == false){	
		alert('Please enter a valid number.');
	}
}

function IsNumeric(sText){
	var ValidChars = "0123456789.";
	var IsNumber=true;
	var Char;
	for (i = 0; i < sText.length && IsNumber == true; i++) { 
		Char = sText.charAt(i); 
	    if (ValidChars.indexOf(Char) == -1) {
	        IsNumber = false;
	    }
	}
	return IsNumber;
}