function $(id) {
	return document.getElementById(id);
}

function copycode(obj) {
	var rng = document.body.createTextRange();
	rng.moveToElementText(obj);
	rng.scrollIntoView();
	rng.select();
	rng.execCommand("Copy");
	rng.collapse(false);
}

function runCode(obj) {
        var winname = window.open('', "_blank", '');
        winname.document.open('text/html', 'replace');
	winname.opener = null
        winname.document.writeln(obj.value);
        winname.document.close();
}

function saveCode(obj) {
        var winname = window.open('', '_blank', 'top=10000');
        winname.document.open('text/html', 'replace');
        winname.document.writeln(obj.value);
        winname.document.execCommand('saveas','','code.htm');
        winname.close();
}

function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
}
}
window.onload = externalLinks;