$(function(){
	// extend the default setting to always include the zebra widget.
	$.tablesorter.defaults.widgets = ['zebra'];
	// call the tablesorter plugin
	$("#myTable").tablesorter({
		// pass the headers argument and assing a object
		headers: {
			// assign the first column (we start counting zero)
			0: {
				// disable it by setting the property sorter to false
				sorter: false
				},
			// assign the third column (we start counting zero)
			2: {
				// disable it by setting the property sorter to false
				sorter: false
				},
			// assign the sixth column (we start counting zero)
			5: {
				// disable it by setting the property sorter to false
				sorter: false
				},
			// assign the seventh column (we start counting zero)
			6: {
				// disable it by setting the property sorter to false
				sorter: false
				},
		// define a custom text extraction function
		textExtraction: function(node) {
				// extract data from markup and return it
				return node.childNodes[0].childNodes[0].innerHTML;
			}
		}
	});
});