<script language="javascript">
function showlist(vtype)
{
with (document.listform)
{
w_type.value=vtype;
}
document.listform.submit();
return;
}
function showout(vid)
{
with (document.showform)
{
id.value=vid;
}
document.showform.submit();
return;
}
function showmenu(buyok,img)
{
if(buyok.style.display=="none")
{
buyok.style.display="";
img.src="images/bclass2.gif";
} else {
buyok.style.display="none";
img.src="images/bclass1.gif";
}
}
</SCRIPT>
<script language="JavaScript">
function page(vpage){
document.pageform.page.value=vpage;
document.pageform.submit();
return false;
}

function trimpos(s) {
return s.replace(/(^[\s]*)|([\s]*$)/g, "");
}

function isnum( tmp ){
if ( tmp >= '0' && tmp <= '9' )
return true;
return false;
}

function mysubmit(){
if (event.keyCode=='13')
gosubmit();
}

function gosubmit(){
var str=trimpos(vpos.value);
if (str == "") {
alert("请输入页码!");
vpos.focus();
return;
}
for ( var i=0; i < str.length; i++ ){
if(isnum( str.charAt(i)) == false){
alert("页码必须由数字组成!");
vpos.focus();
vpos.value="";
return;
}
}
if ( ( parseInt(str)<1 ) || ( parseInt(str) > 2) ){
alert("页码超出范围!");
vpos.focus();
vpos.value="";
return;
}
page(str);
}

</script>