function VerifyData()
{
if ((document.form_mail.txtTo.value == ""))
   
{
alert ("Please Enter a Valid Email Address");
document.form_mail.txtTo.focus();
return false;
}
else
{
return true;
}
}
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		books_off_over = newImage("images/books-off-over.gif");
		multi_off_over = newImage("images/multi-on.gif");
		digi_off_over = newImage("images/digital-on.gif");
		preloadFlag = true;

	}
}

function Verifytext()
{
if ((document.form_searchtext.searchvalue.value == "")) 
   
{
alert ("Please Enter A Search Term");
document.form_searchtext.searchvalue.focus();
return false;
}
else
{
return true;
}
}
function Verifyauthor()
{
if ((document.form_searchauth.searchvalue.value == "")) 
   
{
alert ("Please Enter A Search Term");
document.form_searchauth.searchvalue.focus();
return false;
}
else
{
return true;
}
}