function targetBlank() {
	// remove subdomain of current site's url and setup regex
	var internal = location.host.replace( "www.", "" );
	internal = new RegExp( internal, "i" );
	var a = document.getElementsByTagName( 'a' ); // then, grab every link on the page
	for( var i = 0; i < a.length; i++ ) {
		var href = a[ i ].host; // set the host of each link
		if( !internal.test( href ) ) { // make sure the href doesn't contain current site's host
			a[ i ].setAttribute( 'target', '_blank' ); // if it doesn't, set attributes
		}
	}
};
targetBlank();