function showErrorForm(errors){
	var text;
	var back;
	var i;
	back=false;
	if(errors==undefined){
		return true;
		}
	for(i=0;i<errors.length;i++){
		if(errorsText[errors[i]]!= undefined){
			if(text==undefined){
				text=errorsText[errors[i]]+'.<br/>';
			}else{
				text=text+errorsText[errors[i]]+'.<br/>';	
				}
		}else{
			if(errors[i]!=true && errors[i]!=undefined){
				alert('spatna chyba'+errors[i]);
				back=true;
				}
			}
		}
	if(text==undefined){
		return true;
	}
	if(back!=true){
		all=document.getElementById('errors_box');
		all.style.visibility='visible';
		e=document.getElementById('errors_box_text');
		e.innerHTML=text;	
		}	
	return back;				
	}