// JavaScript Document
  function show(id) {

 	 if (!document.getElementById) return;

  		showDiv = document.getElementById(id);

  		showDiv.style.display = "block";


}

function hide(id) {

 	 if (!document.getElementById) return;

  		hideDiv = document.getElementById(id);

  		hideDiv.style.display = "none";


}

if ( document.all && document.styleSheets && document.styleSheets[0] && document.styleSheets[0].addRule )
{
	document.styleSheets[0].addRule('.tooltip_top', 'behavior: url(http://www.pirolab.it/stile4/iepngfix.htc)');
	
	document.styleSheets[0].addRule('.tooltip_bottom', 'behavior: url(http://www.pirolab.it/stile4/iepngfix.htc)');

}