SharePoint 2010 Font Loader

loadfont.js

// in IE only, we must ensure that we don't load the font when the page is loaded in a dialog, because this 
// breaks the font reference. 
// Dialogs work by appending ?isDlg=1 to the end of an existing page and loading it into an iFrame. 
function loadFont(fontName) {
	var iAmInternetExplorer = navigator.userAgent.indexOf('MSIE') != -1;
	var iAmNotInADialog = window.location.href.indexOf('IsDlg') == -1;
	
	// for other browsers, we load this in a conditional comment. 
	// due to a bug in IE, WOFF fonts can't be loaded twice.
	if (iAmInternetExplorer && iAmNotInADialog) {
		var css_tag = document.createElement('link');
		var head = document.getElementsByTagName('head')[0];
		css_tag.setAttribute('rel','stylesheet');
		css_tag.setAttribute('type','text/css');
		css_tag.setAttribute('href','/Style Library/fonts/'+fontName+'/stylesheet.css');
		head.appendChild(css_tag);

		// We inserted before DOM was loaded! This is probably OK, but verify after the DOM is loaded
		if(typeof jQuery!== "undefined") {
		  jQuery(function() {
			// for some reason the tag wasn't added to the head, so add...
			if(head.innerHTML.indexOf(fontName) == -1) {
				head.appendChild(css_tag);
			}
		  })
		}
	}
}