var MAX_CHARS = 800;
function charsLeft()
{
	var len = document.formu.tay4.value.length;
	if( len > MAX_CHARS )
		document.formu.cleft.value = 0;

	else
		document.formu.cleft.value = MAX_CHARS - len;
}

function down()
{
	var len = document.formu.tay4.value.length;
	
	//escape special keys ...
	try{
		//alert(window.event.keyCode);
		if( window.event && (window.event.keyCode == 8 || window.event.keyCode == 16 ||
							window.event.keyCode == 16 || window.event.keyCode == 17 || 
							window.event.keyCode == 18 || window.event.keyCode == 37 || 
							window.event.keyCode == 38 || window.event.keyCode == 39 || 
															window.event.keyCode == 40 ))
			return true;
	}
	catch(e){
		alert(e);
	}
	
	if( len >= MAX_CHARS )
		return false;
	else
		return true;
}