function showvibthick() 
		{
			document.getElementById('vibthick1').style.display='block';
			document.getElementById('vibthick2').style.display='block';			
		}
		function hidevibthick()
		{
			document.getElementById('vibthick1').style.display='none';
			document.getElementById('vibthick2').style.display='none';
			
		}