动态改变字体大小

<SCRIPT language=javascript>
function ContentSize(size)
{
var obj=document.all.BodyLabel;
obj.style.fontSize=size+"px";
}
</SCRIPT>
<SPAN id=BodyLabel style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">
要变化的字体
</span>
【 字体：<A href="javascript:ContentSize(16)">大</A>
<A href="javascript:ContentSize(14)">中</A>
<A href="javascript:ContentSize(12)">小</A> 】
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<script language="JavaScript" type="text/JavaScript">
var status0='';
var curfontsize=10;
var curlineheight=18;
function fontZoomA(){
if(curfontsize>8){
document.getElementById('fontzoom').style.fontSize=(--curfontsize)+'pt';
document.getElementById('fontzoom').style.lineHeight=(--curlineheight)+'pt';
}
}
function fontZoomB(){
if(curfontsize<64){
document.getElementById('fontzoom').style.fontSize=(++curfontsize)+'pt';
document.getElementById('fontzoom').style.lineHeight=(++curlineheight)+'pt';
}
}
</script>