function pagefocus()
{
if(document.getElementById('pagenumber'))
	document.getElementById('pagenumber').focus()		
}
pagefocus()

function pagevalidate(pgno,maxvalue,bys)
{
	pagefocus();
	
	document.getElementById('pagenumber').value = trim(document.getElementById('pagenumber').value)
	
	pgno = document.getElementById('pagenumber').value

	if(isNaN(pgno))
	{
	 alert('Invalid page number')
		return
	}
	
	pgno = pgno=='' ? 0 : pgno
	
	if(pgno<1 || pgno>maxvalue)
	{
			alert('Invalid page number')	
	}
	else
	{
		window.location = juri+"&pgno="+pgno+"&bys="+bys
	}
}