Select All js files, cancel files, and delete files in batches.

// Select all or cancel. // If stype matches, the na parameter is namefunsel sel (stype, na) {for (vari0; I & lt; document. getElementsByName (na ). length; I ++) {if (stype & amp; #39; all & amp; #39;) document. getElementsByNam // select all and cancel
// Choose "na" as "name" for stype matching.
Function Sel (stype, na ){

For (var I = 0; I <document. getElementsByName (na). length; I ++ ){
If (stype = 'all') document. getElementsByName (na) [I]. checked = true;
Else document. getElementsByName (na) [I]. checked = false;
}
}
// Batch Delete
// Na is name
Function checkSubmit (na, url)
{
 
Var str = '';
For (var I = 0; I <document. getElementsByName (na). length; I ++)
{
If (document. getElementsByName (na) [I]. checked ){
If (str = '') str + = document. getElementsByName (na) [I]. value;
Else str + = ',' + document. getElementsByName (na) [I]. value;
}
}
If (str = '')
{
Alert ('You didn't select any content! ');
Return false;
}
Else
{
Location = url + "? Id = "+ str +" & action = delall ";
}
}

From chaojie2009