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) {
		home_over = newImage("images/home_over.gif");
		models_over = newImage("images/models_over.gif");
		features_over = newImage("images/features_over.gif");
		comparison_over = newImage("images/comparison_over.gif");
		cdrom_over = newImage("images/cdrom_over.gif");
		specs_over = newImage("images/specs_over.gif");
		fisher_over = newImage("images/fisher_over.gif");
		btnmodels_over = newImage("images/btnmodels_over.gif");
		btnfeatures_over = newImage("images/btnfeatures_over.gif");
		btnspecs_over = newImage("images/btnspecs_over.gif");
		btncdrom_over = newImage("images/btncdrom_over.gif");
		preloadFlag = true;
	}
}

function ValidateLogin(theForm)	{
	varUsername=theForm.fldUserName.value
	varPassword=theForm.fldPassword.value
	if (varUsername=="") {
		alert("You MUST enter a value for the Username field.");
		theForm.fldUserName.focus();
		return false;
	}
	if (varPassword=="") {
		alert("You MUST enter a value for the Password field.");
		theForm.fldPassword.focus();
		return false;
	}
	return true;
}

function ValidateSearch(theForm)	{
	varSearchTerm=theForm.fldSearchTerm.value
	if (varSearchTerm=="") {
		alert("You MUST enter a Search Term.");
		theForm.fldSearchTerm.focus();
		return false;
	}
	return true;
}

function makeWin(file,window,tmpwidth,tmpheight,tmpScrollBars) {
    msgWindow=open(file,window,'resizable=no,width=' + tmpwidth + ',height=' + tmpheight + ',scrollbars=' + tmpScrollBars + ',location=0');
    if (msgWindow.opener == null) msgWindow.opener = self;
}

function makePrintWin(file,window) {
    msgWindow=open(file,window,'resizable=yes,toolbar=1,location=1,scrollbars=1, menubar=1,status=1');
    if (msgWindow.opener == null) msgWindow.opener = self;
}