// JavaScript Document

var img_col_asc = new Image()
var img_col_desc = new Image()
var img_col_nopref = new Image()
img_col_asc.src = "img/col_asc.gif"
img_col_desc.src = "img/col_desc.gif"
img_col_nopref.src = "img/col_nopref.gif"

function changeList_col_order(col){
var col_td = document.getElementById('listcol_' + col)
var img_obj = eval("document.listcol_img_" + col)
if (img_obj.src == img_col_asc.src){ img_obj.src = img_col_desc.src; col_td.className = 'rowtop_on' }
else if (img_obj.src == img_col_desc.src){ img_obj.src = img_col_nopref.src; col_td.className = 'rowtop_off' }
else if (img_obj.src == img_col_nopref.src){ img_obj.src = img_col_asc.src; col_td.className = 'rowtop_on' }
}

function changeList_apply(f){
var i = 0
var stop = false
var s = ''
while (i<20 && !stop){
	i++
	img_obj =  eval("document.listcol_img_" + i)
	if (img_obj){
		if (img_obj.src == img_col_asc.src){ s += img_obj.id + '=asc;' }
		else if (img_obj.src == img_col_desc.src){ s += img_obj.id + '=desc;' }
	}else{
		stop = true
	}
}

if (f != 'get'){
	var form_obj = eval("document." + f)
	form_obj.orderby.value = s
	form_obj.submit()
}else{
	// send through get string
	arr = document.location.href.split('&orderby')
	document.location = arr[0] + "&orderby=" + escape(s)
}
}