function evalKeyForSubmit(event, frm) {  

	var ua = navigator.userAgent;
	if(ua.indexOf("MSIE") >=0) {
		if (event && event.keyCode == 13){ // IE: ...event.keyCode...  
       			// ENTER gedrückt, also Formular abschicken  
      	 		frm.submit();  
    		} else  {
       			return true;
       		}  
	} else {
		if (event && event.which == 13){ // IE: ...event.keyCode...  
       			// ENTER gedrückt, also Formular abschicken  
      	 		frm.submit();  
    		} else { 
       			return true; 
       		}
	} 
}