Current Week of the year


		<script 
		language="javascript"
		type="text/javascript">

		<!--

		/* Visit http://www.yaldex.com/ for full source code

		and get more free JavaScript, CSS and DHTML scripts! */

		function 
		weekNo()
		{

		  
		var 
		totalDays =
		0;

		  now 
		=
		new
		Date();

		  years=now.getYear()

		  
		if
		(years
		<
		1000)

		  years+=1900

		  
		var 
		days =
		new
		Array(12);
		// Array to hold the total days 
		in a month

		  days[0]
		=
		31;

		  days[2]
		=
		31;

		  days[3]
		=
		30;

		  days[4]
		=
		31;

		  days[5]
		=
		30;

		  days[6]
		=
		31;

		  days[7]
		=
		31;

		  days[8]
		=
		30;

		  days[9]
		=
		31;

		  days[10]
		=
		30;

		  days[11]
		=
		31;

		

		  
		//  Check to see if this is a leap year

		

		   
		if
		(Math.round(now.getYear()/4)
		== 
		now.getYear()/4)
		{

		     days[1]
		=
		29

		  
		}else{

		     days[1]
		=
		28

		  
		}

		

		//  If this is January no need 
		for any fancy calculation otherwise figure out the

		//  total number of days to date and then determine what week

		

		  
		if
		(now.getMonth()
		==
		0)
		{

		     totalDays 
		= 
		totalDays + 
		now.getDate();

		  
		}else{

		     
		var 
		curMonth = 
		now.getMonth();

		     
		for
		(var 
		count =
		1; 
		count <= 
		curMonth; 
		count++)
		{

		         totalDays 
		= 
		totalDays + 
		days[count
		-
		1];

		     
		}

		     totalDays 
		= 
		totalDays + 
		now.getDate();

		   
		}

		   
		var 
		week =
		Math.round(totalDays/7);

		   
		return 
		week;

		}

		document.write("Welcome 
		to <b>week "+weekNo()+"<\/b> 
		of "+years+"!")

		

		// -->

		</script>