function images_all()
{
	for (i=0;i < document.fimg.images.length; i++)
	{
		document.fimg.images[i].checked=true;
	}
}
function images_all2()
{
	for (j=0;j < document.fimg.images.length; j++)
	{
		document.fimg.images[j].checked=false;
	}
}
function downloads_all()
{
	for (i=0;i < document.fimg.downloads.length; i++)
	{
		document.fimg.downloads[i].checked=true;
	}
}
function downloads_all2()
{
	for (j=0;j < document.fimg.downloads.length; j++)
	{
		document.fimg.downloads[j].checked=false;
	}
}
function up_all()
{
	for (i=0;i < document.fimg.up.length; i++)
	{
		document.fimg.up[i].checked=true;
	}
}
function up_all2()
{
	for (j=0;j < document.fimg.up.length; j++)
	{
		document.fimg.up[j].checked=false;
	}
}