function isValidEmailAddress(valueToCheck){
	return (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(valueToCheck));
}

function checkNewsletterForm(formId,checkAGB){
	formElem = document.getElementById(formId);
	if(formElem){
		if(!isValidEmailAddress(formElem.email.value)){
			alert("Bitte geben Sie eine gültige e-Mail Adresse ein!");
			return false;
		}			
/*
		if( checkAGB && formElem.agb_ok.checked == false ){
			alert("Bitte stimmen Sie den AGB durch anklicken der Checkbox zu!");
			return false;
		}
*/
		return true;
	}
	return false;
}

function sendToFriend(url){
	windowHandler = openPopUp("/sendToFriend.php?url="+url,"sendtofriend",500,300);
}

function openPopUp(url,name,width,height){
	var windowHandle=window.open(url,name,"scrollbars=yes,status=yes,toolbar=no,location=no,directories=no,resizable=no,menubar=no,width="+width+",height="+height)
	if(windowHandle == undefined){
		alert("Bitte den pop up blocker deaktivieren");
		return undefined;
	}
	return windowHandle;
	
}

function checkEmailContent(element){
	if(element.value == 'deine e-mail Adresse')
		element.value = "";
}