function open_in_popup_window(url, name, width, height) {
	window.open(url.href,name,'width=' + width + ',height=' + height + ',toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes');
	return false;
}
function open_in_new_window(url) {
	window.open(url.href,'external_link','toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes,resizable=yes');
	return false;
}

var signup = false;
function toggleSignup() {
	if(!signup) {
		$('#signup_fields').slideDown(300);
		signup = true;
	}
	else { 
		$('#signup_fields').slideUp(250);
		signup = false;
	}
}

$(document).ready(function()
{	
	table = $("table.alternate tbody");
	row = table.find('tr:first');
	num = 0;
	
	for (i=0;i<=30;i++) {
		num++;
		if(num==1) row.addClass('odd');
		else if(num==2) {
			num=0;
		}
		row = row.next();
	}
	
	//add in top and bottom rounded corners to full-width main images
	$(".linkbox").wrap('<div class="linkboxwrap"></div>');
	$(".linkbox").append('<div class="corners_btm">');
	$(".linkbox").prepend('<div class="corners_top">');
	
});