IE6/7/8下cssText值与IE9/Firefox/Safari/Chrome/Opera不同

<div style="color:red;">TEST</div>
<script>
	var div = document.getElementsByTagName(‘div‘);
	alert(div[0].style.cssText);
</script>

<div style="border:1px solid gray;">TEST</div>
<script>
	var div = document.getElementsByTagName(‘div‘);
	alert(div[0].style.cssText);
</script>