function keyPage(e) {
	var key = e.keyCode;
	if (key == 36) // home=36
		window.location = document.getElementById('homeUrl').href;
	else if (key == 73) // i=73
		window.location = document.getElementById('inverseUrl').href;
	else if (key == 65 || key == 191 ) // a=65 ?=191;
		window.location = document.getElementById('helpUrl').href;
	else if (key == 80) // p = 80
		window.location = document.getElementById('pdfUrl').href;
//	else if (key == 40) // bottom-arrow = 40
//		window.location = document.getElementById('allUrl').href;
	else if (key == 37) // left-arrow=37
		window.location = document.getElementById('previousUrl').href;
	else if (key == 38) // top-arrow=38
		window.location = document.getElementById('contentsUrl').href;
	else if (key == 39) // right-arrow=39
		window.location = document.getElementById('nextUrl').href;
	else if (key == 67) // c=67
		window.location = document.getElementById('contactUrl').href;
	else if (key == 27) // Esc = 27
		window.location = document.getElementById('escapeUrl').href;
//	else 
//		alert(key);
	
}
if ( window.addEventListener )
	window.addEventListener("keyup", keyPage, false);