Copyright Copy Paste

custom.js

function addLink() {
    var content_element = document.getElementById('wtr-content');
    var body_element = document.getElementsByTagName("body")[0]
	var selection, newdiv;
	if (window.getSelection) {
        selection = window.getSelection();
	}else{
	    var ypos = jQuery(document).scrollTop()
        selection = readSelected(content_element)
        jQuery(document).scrollTop(ypos)
    }
    newdiv = document.createElement('div');
    newdiv.style.position = "absolute";
    newdiv.style.top=ypos
    newdiv.style.left=-9999
    body_element.appendChild(newdiv);

	var copytext = selection + "<br /><br /> Read more at: <a href='"+document.location.href+"'>"+document.location.href+"</a>";
	newdiv.innerHTML = copytext;
    if (window.getSelection) {
	   selection.selectAllChildren(newdiv);
    } else {
        var range = document.body.createTextRange();
        range.moveToElementText(newdiv);
        range.select ();
    }
	window.setTimeout(function() {
		body_element.removeChild(newdiv);
	},0);
}
document.getElementById('wtr-content').oncopy = addLink;

function readSelected(id) {
    var sel = "", el = id;
    if (typeof el.selectionStart == "number" && typeof el.selectionEnd == "number") {
        sel = el.value.slice(el.selectionStart, el.selectionEnd);
    } else if (document.selection && document.selection.createRange) {
        el.focus();
        sel = document.selection.createRange().text;
    }
    return sel;
}