function bg_img_toggle(img_a,img_w,img_h) {
	var newImg = new Image();
	newImg.src = img_a;
	var img_w = newImg.width;
	var img_h = newImg.height;
	document.getElementById("bg_img").innerHTML='<table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="100%"><tr><td><td width="52%" height="221"><p align="center"><img border="0" src="'+img_a+'" width="'+img_w+'" height="'+img_h+'"></td></tr></table>';
}