var tagName = "";

function itemBgColorSetter(tagName){
	if(tagName != "" && tagName != null){
		document.getElementById(tagName).style.backgroundColor = "#f00";
	}
}

function bannerPicker(){
	var picSeeds = 18;
	var banner = document.getElementById('banner');
	var bannerName;
	var bannerNum = Math.floor(Math.random() * picSeeds) + 1;
	if(bannerNum < 10){
		bannerNum = '0' + bannerNum;
	}
	bannerName = 'images/banner_' + bannerNum + '.jpg';
	banner.style.background = 'url(' + bannerName + ') left top no-repeat';
}

function clearInput(form){
	form.value = "";
	emailCheck(form.value);
}

function emailCheck(emailField){
	document.newsLetter.emailButton.disabled = true;
	document.newsLetter.emailButton.style.background = "url(/images/email_bg_false.gif) 1px 1px repeat-x";
	if(emailField.value != '' && emailField.value != null){
		var emailAddr = emailField.value;
		if(isRightStr4Email(emailAddr)){
			document.newsLetter.emailButton.disabled = false;
			document.newsLetter.emailButton.style.background = "url(/images/email_bg.gif) 1px 1px repeat-x";
		}
	}
}

function newsletterCheck(emailForm){
	if(!isRightStr4Email(emailForm.email.value)){
		emailForm.emailButton.disabled = true;
		emailForm.email.select();
	}else{
		emailForm.submit();
	}
}

function calendarView(url){
	window.open(url, 'calview', 'height=300, width=400, top=30, left=30, toolbar=no, menubar=no, scrollbars=yes, resizable=yes,location=no, status=no');
}