Add icon to pdf, doc or any other file extension based on extension type.

Add PDF or Doc to documents

/* Add PDF/Doc icons to Documents. */
	String.prototype.endsWith = function (suffix) {
		return this.indexOf(suffix, this.length - suffix.length) !== -1;
	};
	$('.sub_content_area .sub_right a').each(function () {
		if ($(this).attr("href")) {
			var href = $(this).attr("href");
			if (href.endsWith("xlsx") || href.endsWith("xls")) {
				$(this).append('&nbsp;<img width="88" height="28" class="excel-icon" src="/sites/all/themes/hdfsresponsive/css/images/download_excel.png" />');
			}
			if (href.endsWith("pptx") || href.endsWith("ppt")) {
				$(this).append('&nbsp;<img width="88" height="28" class="ppt-icon" src="/sites/all/themes/hdfsresponsive/css/images/download_ppt.png" />');
			}
			if (href.endsWith("docx") || href.endsWith("doc")) {
				$(this).append('&nbsp;<img width="88" height="28" class="doc-icon" src="/sites/all/themes/hdfsresponsive/css/images/download_word.png" />');
			}
			if (href.endsWith("pdf")) {
				$(this).append('&nbsp;<img width="88" height="28" class="pdf-icon" src="/sites/all/themes/hdfsresponsive/css/images/download_pdf.png" />');
			}
			if (href.endsWith("txt")) {
				$(this).addClass('txt');
			}
		}
	});