// JavaScript Document

function checkLength()
	{
	//var cntnt01fbrp__51.value = document.getElementsByName('cntnt01fbrp__48[]').length;
		
	// assigh the name of the checkbox;
	var len = document.getElementsByName('cntnt01fbrp__48[]').length;

	var numchecks = 0;
	// Get the checkbox array length and iterate it to see if any of them is selected
	with (var i = 0; i < 4; i++)
	{
		if (len[i].checked)
		{
		        numchecks += 1;
		}
	}
		cntnt01fbrp__51.value = numchecks;
	}