js复制网页input的内容

<!--
focus();
function CheckOthers(form){ for (var i=0;i<form.elements.length;i++){var e = form.elements[i];if (e.checked==false){e.checked = true;}else{e.checked = false;}}}
function CheckAll(form){for (var i=0;i<form.elements.length;i++){var e = form.elements[i];e.checked = true;}}
if ( top.location.href == window.location.href && window.location.href.indexOf("no_full_screen") == -1 ){self.moveTo(-4,-4);self.resizeTo((screen.availWidth+8),(screen.availHeight+8));}
var imgheight
var imgleft
document.ns = navigator.appName == "Netscape"
window.screen.width>800 ? imgheight=580:imgheight=50
window.screen.width>800 ? imgleft=800:imgleft=800

function HighlightAll(theField) {
var tempval=document.form1.purl
tempval.focus()
tempval.select()
therange=tempval.createTextRange()
therange.execCommand("Copy")
alert('复制成功')
form1.purl.focus();
return (false);}
function HighlightAll2(theField) {
var tempval=document.formde.bbsUBB
tempval.focus()
tempval.select()
therange=tempval.createTextRange()
therange.execCommand("Copy")
alert('复制成功 您现在可以把这些歌曲发送给您的ＱＱ好友！')
return (false);}
function isCBag(s, bagw)
{var i;var sdde="";var bag=s.length;
if(bagw < s.length){
var bag=bagw;
for (i = 0; i < bag; i++){
var c = s.charAt(i);
sdde =sdde + c;}return sdde;}else{return s;}}
function msuiclishi(dudududd){
hiryaime = hirya.split('&');
var dsds="";var musicd=1;
var musicid=dudududd;
for(var i = 0; i < hiryaime.length; i++){
var hiryaime0=hiryaime[i];
if(hiryaime0){
hiryaime1 = hiryaime0.split('|');
if (hiryaime1[0]==musicid)
{dsds=dsds+"<tr><td width='156' bgcolor='#DCFFB9' ><input type='checkbox' name='id' value='"+hiryaime1[0]+"'><img src='/images/d_2.gif'> <a href='/play/"+hiryaime1[0]+".html'>"+isCBag(hiryaime1[1], 9)+"</a></td>";
dsds=dsds+"<td align='center' height='23' bgcolor='#DCFFB9'><a href='/user/UserCollect.asp?action=bok&id="+hiryaime1[0]+"' target='_blank'><img src='/images/favadd.gif' border='0'></a></td>";
dsds=dsds+"<td height='23' align='center' bgcolor='#DCFFB9'><a href='/lyric/"+hiryaime1[0]+".html' target='detail' ><img src='/images/book.gif' border='0'></a></td></tr>";
}else{if (musicd==1){
dsds=dsds+"<tr onmouseover=/"this.bgColor='#FEEFCF'/" onmouseout=/"this.bgColor='#FFFFFF'/"><td width='156' height='23'><input type='checkbox' name='id' value='"+hiryaime1[0]+"'>"+(i+1)+".<a href='/play/"+hiryaime1[0]+".html'>"+isCBag(hiryaime1[1], 9)+"</a></td>";
dsds=dsds+"<td align='center'><a href='/user/UserCollect.asp?action=bok&id="+hiryaime1[0]+"' target='_blank'><img src='/images/favadd.gif' border='0'></a></td>";
dsds=dsds+"<td height='23' align='center'><a href='/lyric/"+hiryaime1[0]+".html' target='detail' ><img src='/images/book.gif' border='0'></a></td></tr>";
var musicd=0;
}else{
dsds=dsds+"<tr bgcolor='#F5F5F5' onmouseover=/"this.bgColor='#FEEFCF'/" onmouseout=/"this.bgColor='#F5F5F5'/">";
dsds=dsds+"<td width='156' height='23' ><input type='checkbox' name='id' value='"+hiryaime1[0]+"'>"+(i+1)+".<a href='/play/"+hiryaime1[0]+".html' >"+isCBag(hiryaime1[1], 9)+"</a></td>";
dsds=dsds+"<td align='center'><a href='/user/UserCollect.asp?action=bok&id="+hiryaime1[0]+"' target='_blank'><img src='/images/favadd.gif' border='0'></a></td>";
dsds=dsds+"<td height='23' align='center'><a href='/lyric/"+hiryaime1[0]+".html' target='detail' ><img src='/images/book.gif' border='0'></a></td></tr>";
var musicd=1;
}}}}document.writeln(dsds);}
function SearchALL(theForm){if (theForm.keyword.value == "") { alert("请输入关键字！"); theForm.keyword.focus(); return (false); }return (true);}
//-->