var selectedTxt = "";

function parrot() {
        
    var userSelection;
    if (window.getSelection) {
        userSelection = window.getSelection();
    } else if (document.selection) { 
        userSelection = document.selection.createRange();
    }
    
    txt = userSelection.text ? userSelection.text : userSelection
    
    selectedTxt += txt;
    
    if (/papegaai/i.test(selectedTxt)) {
        window.location.href = "/nl/products.php/papegaai";
    }
}

function initParrot() {
    document.onmouseup = parrot;
}

addOnLoadFunction("initParrot");