正在阅读：利用JavaScript创建功能强大的GUI利用JavaScript创建功能强大的GUI

<img class="button"
onmouseover="mouseover(this);"
onmouseout="mouseout(this);"
onmousedown="mousedown(this);"
onmouseup="mouseup(this);"
onclick="format_sel('b');"
src="bold.gif"
width="16" height="16"
align="middle"
alt="click to make your selection bold">
<img class="button"
onmouseover="mouseover(this);"
onmouseout="mouseout(this);"
onmousedown="mousedown(this);"
onmouseup="mouseup(this);"
onclick="format_sel('i');"
src="italic.gif"
width="16" height="16"
align="middle"
alt="click to make your selection italic">
<img class="button"
onmouseover="mouseover(this);"
onmouseout="mouseout(this);"
onmousedown="mousedown(this);"
onmouseup="mouseup(this);"
onclick="insert_link();"
src="link.gif"
width="32" height="16"
align="middle"
alt="click to add a link">