What is the solution to making this function properly?
<html>
<head>
<style type="text/css">
.left
{
float: left;
background-image: url('image_with_variable_width.png');
background-repeat: repeat-y;
}
.right
{
float: right;
background-image: url('image_with_variable_width_flipped.png');
background-repeat: repeat-y;
}
</style>
</head>
<body>
<div class="left"></div>
<div class="right"></div>
</body>
</html>