// сообщение об ошибке в тексте
document.onkeypress = catchKey;

function catchKey (event) {
    if (window.event)
	event = window.event;
    if (event.ctrlKey && event.keyCode == 13 || event.keyCode == 10) {
	if(document.getSelection || document.selection.createRange().text){
	   if(document.getSelection && !document.getSelection().length) return;
	    (window.open("/main/send_mistake.asp","SendMistake","width=450,height=260")).focus();
	}
    }
}