// JavaScript Document


function trimLength(textarea, maxChars)
{
	if(textarea.value.length <= maxChars) return;

	textarea.value = textarea.value.substr(0, maxChars)
}



function canAddCharacter(textarea, maxChars)
{
	if(typeof(textarea.onkeypress.arguments[0]) != 'undefined')
		var keyCode = textarea.onkeypress.arguments[0].keyCode;
	else
	{
		if(document.selection.createRange().text.length != 0) return true;
		var keyCode = event.keyCode;
	}

	var allowedChars = new Array(8, 37, 38, 39, 40, 46);	//Backspace, delete and arrow keys
	for(var x=0; x<allowedChars.length; x++) if(allowedChars[x] == keyCode) return true;

	if(textarea.value.length < maxChars) return true;

	return false;
}