document.onkeydown = catchKey;

function catchKey (event) {
//    var event;
	if (!document.getElementById) return;
	if (window.event) event = window.event;

	if (event.ctrlKey)
	{
		switch (event.keyCode ? event.keyCode : event.which ? event.which : null)
		{
			case 13:
                openMailWindow();
				break;
		}
	}
}

function openMailWindow() {
	var html = showDialog();
}

function showDialog(pagePath, args, width, height)
{
	 errorWindow = window.open("http://www.obltv.ru/error.html", "Error", 'width=600,height=350') 
}