function checkBrowser(){

	var regAppVersion = /\d+.\d+/;
	var version = regAppVersion.exec(navigator.appVersion)
	//alert(navigator.appName + " " + version+ " : " + navigator.appVersion);

	if((navigator.appName == 'Netscape') && (version < 5)){
		
		return true;
	}else
		return false;
}


function ShowHideTab(id, b1n, sp){
	
	
	
	if(checkBrowser())
		return;
	else{
		
		var aTab = document.getElementById("st"+id);
		var aImage  = document.getElementById("im"+id);
	}
	
	if (!aTab || !aImage) return;
	
	

		b1n = (aTab.style.display.toLowerCase() == "none");


	if (b1n == false)
	{
		aTab.style.display = "none";
		aImage.src = "../images/newsletteropen.jpg";
		aImage.alt = "Newsletter oeffnen";
		
		
	}
	else
	{
		aTab.style.display = "";
		aImage.src = "../images/newsletterclose.jpg";
		aImage.alt = "Newsletter schliessen";
	}
	
}