Ellipsis function

gistfile1.js

function(text, maxLength){
    if(typeof maxLength === 'undefined'){
        maxLength = 9000; //a large number
    }

    if (text.length <= maxLength)
        return text;

    var xMaxFit = maxLength - 3;
    var xTruncateAt = text.lastIndexOf(' ', xMaxFit);
    if (xTruncateAt == -1 || xTruncateAt < maxLength / 2)
        xTruncateAt = xMaxFit;

    return text.substr(0, xTruncateAt) + "...";
}