IE event.srcElement和FF event.target 功能比较_javascript技巧

<script> <BR>function Get_srcElement(evgl) <BR>{ <BR>　　var srcElement="" <BR>　　 //判断是IE 还是Firefox <BR>　　var evg=evgl.srcElement?evgl.srcElement:evgl.target; <BR>　　srcElement = srcElement + "\n" + "button_001_id----event.srcElement.id : " + evg.id <BR>　　srcElement = srcElement + "\n" + "input---event.srcElement.tagName : " + evg.tagName <BR>　　srcElement = srcElement + "\n" + "button---event.srcElement.type : " + evg.type <BR>　　srcElement = srcElement + "\n" + "单击查看---event.srcElement.value : " + evg.value <BR>　　srcElement = srcElement + "\n" + "button_001_Name---event.srcElement.name : " + evg.name <BR>　　srcElement = srcElement + "\n" + "button_001_Class---event.srcElement.className : " + evg.className <BR>　　//IE 支持parentElement FireFox支持parentNode <BR>　　srcElement = srcElement + "\n" + "form_001---event.srcElement.parentElement.id : " + 　　　　evg.parentNode.id <BR>　　srcElement = srcElement + "\n" + "event.srcElement.getattribute : " + evg.getAttribute <BR>　　alert(srcElement); <BR>} <BR></script>