A simple jQuery tooltip function that creates tooltips based on title attributes

simpletooltip.js

// Tooltip

function tooltip(obj) {
	
	// Check if tooltip is open already
	var tipText = $(obj).attr("title");
		
		if(tipText==undefined) { // No title
			
			// Tooltip is open
			// Remove span and add text as title to span again
			tipText = $(obj).next("span.tooltip").text();
			
			$(obj).attr("title", tipText);
			$(obj).next('span.tooltip').remove();
	
		} else {

			// Append tooltip as new span after clicked item, then remove the title to avoid duplicate tooltips

			$(obj).parent("li").append('<span class="tooltip">' + tipText + '</span>');
			$(obj).removeAttr("title");
		}
}