if (document.all && document.styleSheets && document.styleSheets[0] &&  document.styleSheets[0].addRule)
 {
  document.styleSheets[0].addRule('*', 'behavior: url(/javascripts/iepngfix.htc)');
 }

function replaceImage(filename){
	document.getElementById('large_product_photo').src='/images/thumbs/595/'+filename;
}