function showHideSub_sup()
	{ 		
		switch (chg)
		{
		  case 1:
			document.arrow1.src='premier-images/arrow-down.gif';
			document.getElementById('sup_ul').style.display='block';
			chg=2;
			if(chg2==2)showHideSub_ins();
			break;
		  case 2:
			document.arrow1.src='premier-images/arrow.gif';
			document.getElementById('sup_ul').style.display='none';
			chg=1;
			break;
		  }
	}

	function showHideSub_ins()
	{ 		
		//alert("vvvvvvvvvvvvvvv");
		switch (chg2)
		{
		  case 1:
			document.arrow2.src='premier-images/arrow-down.gif';
			document.getElementById('ins_ul').style.display='block';
			chg2=2;
			if(chg==2)showHideSub_sup();
			break;
		  case 2:
			document.arrow2.src='premier-images/arrow.gif';
			document.getElementById('ins_ul').style.display='none';
			chg2=1;
			break;
		  }
	}

	function initMenu()
	{
		chg=1;
		chg2=1;
		//showHideSub_ins();
		//alert(document.title);
		document.getElementById('sup').onclick = showHideSub_sup;
		document.getElementById('ins').onclick = showHideSub_ins;
	}

	function openMenu()
	{
		chg=1;
		chg2=1;
	}