function show_div(div_name)
{
	document.getElementById(div_name).style.display = 'block';
}


function toggle_div(div_name)
{
	if(document.getElementById(div_name).style.display == 'none')
	{
		document.getElementById(div_name).style.display = '';
	}
	else
	{
		document.getElementById(div_name).style.display = 'none';
	}
}

		function changeRegister()
		{			
			var selectIndex = document.getElementById('no_registrants').selectedIndex;
			var selectValue = document.getElementById('no_registrants')[selectIndex].value;
			
			var row1 = document.getElementById("1");
			var row2 = document.getElementById("2");
			var row3 = document.getElementById("3");
			var row4 = document.getElementById("4");
			var row5 = document.getElementById("5");			
			
			row1.style.display = 'none';
			row2.style.display = 'none';
			row3.style.display = 'none';
			row4.style.display = 'none';
			row5.style.display = 'none';
			document.getElementById("submit").style.display = 'none'
			
			if(selectValue > '0')
			{
				row1.style.display = 'block';
				document.getElementById("submit").style.display = 'block'
			}
			
			if(selectValue > '1')
			{
				row2.style.display = 'block';
			}
			
			if(selectValue > '2')
			{
				row3.style.display = 'block';
			}
			
			if(selectValue > '3')
			{
				row4.style.display = 'block';
			}
			
			if(selectValue > '4')
			{
				row5.style.display = 'block';
			}
		}
		
		
		
		
function popUp(theURL, w, h, name)
{
 	var newWindow;
	var s = "HEIGHT=" + h + ",WIDTH=" + w + ",resizable=0,scrollbars=1,menubar=0";
	newWindow = window.open(theURL,name,s);
	newWindow.focus();
}