function show_calender(cntl_id)
			{				
				hide_calender() //Function used to disappear  Calender conrtolls 
				document.all.item(cntl_id).style.display = "block";	
			}
			function hide_calender()
			{	
				document.all.item("Cal_M1").style.display = "none";
				document.all.item("Cal_M2").style.display = "none";
				document.all.item("Cal_M3").style.display = "none";
				document.all.item("Cal_M4").style.display = "none";
				document.all.item("Cal_M5").style.display = "none";
				document.all.item("Cal_M6").style.display = "none";
			}
			
			function NoEvent()
		      {
		        return false;
		      }