jQuery.fn.creaTip = function(textoTip, imgTip) {
				   this.each(function(){
				      elem = $(this);
				      var miTip = $('<div class="tip"><img src="' + imgTip + '" />&nbsp;&nbsp;' + textoTip + '</div>');
				      $(document.body).append(miTip);
				      elem.data("capatip", miTip);


				      elem.mouseenter(function(e){
				         var ban = $("body").innerWidth();
				         var bal = $("body").innerHeight()

				         var miTip = $(this).data("capatip");
				         miTip.css("left", e.pageX + 15);
				         miTip.css("top", e.pageY + 10);

						 if ( miTip.innerWidth()+e.pageX >= ban )
							{ miTip.css("left", e.pageX - 10 - miTip.innerWidth() ); }

				         miTip.show(500);
				      });


				      elem.mouseleave(function(e){
				         var miTip = $(this).data("capatip");
				         miTip.hide(500);
				      });
				   });

				   return this;
				};