// Non-matching words
var excludeWords = ["a","an","and","for","or","as","at", "of"];

/*
Choose between:
eeCaseLowerCase
eeCaseUpperCase
eeCaseCapitalize
*/
var convertTo = eeCaseCapitalize;

function coords() {
	return {
	x: document.selection.GetActivePointX(eePosLogical),
	y: document.selection.GetActivePointY(eePosLogical)
	};
}
function contains(arr,str) {
	for (var i = 0; i < arr.length; i++) {
		if (arr[i] == str)
			return true;
	}
	return false;
}
var matchNonwhitespace = new RegExp("\\S");

var left = {
	x: document.selection.GetTopPointX(eePosLogical),
	y: document.selection.GetTopPointY(eePosLogical)
};
var selected = {
	x: document.selection.GetBottomPointX(eePosLogical),
	y: document.selection.GetBottomPointY(eePosLogical)
};

if (left.x > 1) {
	document.selection.SetActivePoint(eePosLogical, left.x, left.y);
	document.selection.SetActivePoint(eePosLogical, left.x-1, left.y, true);
	if (document.selection.Text != " ") {
		document.selection.WordRight();
		left = coords();
	}
}

while (left.y < selected.y || left.x < selected.x) {
	document.selection.SetActivePoint(eePosLogical, left.x, left.y);

	document.selection.WordRight(true);
	var right = coords();

	if (matchNonwhitespace.test(document.selection.Text)) {
		if (document.selection.Text.slice(-1) == " ") {
			right = coords();
			document.selection.SetActivePoint(eePosLogical, left.x,left.y);
			document.selection.SetActivePoint(eePosLogical, right.x-1,right.y,true);
		}
		
		if (!contains(excludeWords, document.selection.Text))
			document.selection.ChangeCase( convertTo );
	}

	left = right;
}