function cserebere() {  
		
		var hol = document.getElementById('tartalom');
		
		var replaces = 0;
		while (hol.innerHTML.indexOf('##'+'kukac##')!=-1 &&  replaces<50) {  
			hol.innerHTML = hol.innerHTML.replace('##'+'kukac##',String.fromCharCode(64));     
			replaces++; 
		}
		replaces = 0;
		while (hol.innerHTML.indexOf('##'+'pont##')!=-1 &&  replaces<50) {  
			hol.innerHTML=hol.innerHTML.replace('##'+'pont##','.');
			replaces++; 
		}
		replaces = 0;
		while (hol.innerHTML.indexOf('mto:_')!=-1 &&  replaces<50) {  
			hol.innerHTML=hol.innerHTML.replace('mto:_','mail'+'to'+':');
			replaces++; 
		}
		return false;
	}