Open links and Popups in a new window - with jQuery

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Since "target" is not valid - use this for popups with jQuery 

Using the current W3 standard for anchor tags anchor tags can be given a rel attribute that describes what relation the linked-to page has to this current page. It also provides a standard list of available relationships. Many other groups added to this list and there are many widely-used values for the rel tag, including "external".

With this method, give links to be made popups a rel attribute of "popup", and include the following file in the head of the document.

gistfile1.js

// ----------------------------------------------------------------------------
// links and popups
// ----------------------------------------------------------------------------

// open external links in a new window ("target" is not valid XHTML strict)
function externallinks() {
	if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName("a");
	for (var i=0; i<anchors.length; i++) {
		var anchor = anchors[i];
		anchor.tabindex = i;
		if (anchor.getAttribute("href")) {
			if (anchor.getAttribute("rel") == "external")
				anchor.target = "_blank";
			else if (anchor.getAttribute("rel") == "parent")
				anchor.target = "_parent";
			else if (anchor.getAttribute("rel") == "top")
				anchor.target = "_top";
			else if (anchor.getAttribute("rel") == "popup")
                $('a[rel="popup"]').click(function(){return $.dbPopWin( $(this).attr('href'));}
				);	
		}
	}
}
// dbPopWin: db Popup Windows Plugin for JQuery
jQuery.dbPopWin = function(url, options)
{options = jQuery.extend(
		{
			/* default options */
			dbPopWinWidth:      480,
			dbPopWinHeight:     300,
			dbPopWinTarget:     'dbPopWin',
			dbPopWinScrollbars: 'yes',
			dbPopWinResizable:  'no',
			dbPopWinMenuBar:    'no',
			dbPopWinAddressBar: 'no'
		},
		options
	);
	/* center the window by default. */
	if (!options.dbPopWinY){options.dbPopWinY = screen.height / 2 - options.dbPopWinHeight / 2;};
	if (!options.dbPopWinX){options.dbPopWinX = screen.width / 2 - options.dbPopWinWidth / 2;};
	open(
		url,
		options['dbPopWinTarget'],
		'width= '      + options.dbPopWinWidth +
		',height='     + options.dbPopWinHeight + 
		',top='        + options.dbPopWinY + 
		',left='       + options.dbPopWinX + 
		',scrollbars=' + options.dbPopWinScrollbars +
		',resizable='  + options.dbPopWinResizable +
		',menubar='    + options.dbPopWinMenuBar +
		',location='   + options.dbPopWinAddressBar
	);
	return false;
};