function selectcheck(check)
{
	var list = document.getElementById("selectableTable").getElementsByTagName("input");
	for (var i = 0;i < list.length;i++)
		{
		if (list[i].className == "checkonoff")
		{
			list[i].checked = check;
		}
       	}
}

function selectall()
{
	selectcheck(true);
}

function deselectall()
{
	selectcheck(false);
}

function insert_checkall()
{
	var tr = document.createElement("tr");
	var td = document.createElement("td");
	td.colSpan = "2";
	td.style.textAlign = "center";
	var td3 = document.createElement("td");
	td3.colSpan = "3";
	td3.className = "tableData";
	var acheck = document.createElement("a");
	acheck.href = "javascript:selectall()";
	//acheck.href = "#";
	//acheck.onclick = selectall;
	var select = document.createTextNode("select all");	
	acheck.appendChild(select);

	var decheck = document.createElement("a");
	decheck.href = "javascript:deselectall()";
	//decheck.href = "#";
	//decheck.onclick = deselectall;
	var deselect = document.createTextNode("deselect all");
	decheck.appendChild(deselect);

	td.appendChild(acheck);
	td.appendChild(document.createTextNode(" | "));
	td.appendChild(decheck);
	tr.appendChild(td);
	tr.appendChild(td3);
	var acl = document.getElementById("aftercheckall");
	acl.parentNode.insertBefore(tr,acl);
}


/*			<tr>
				<td colspan=\"2\" align=\"center\">	
					<a href=\"#\" onclick=\"selectcheck(true)\">select all</a> | <a href=\"#\" onclick=\"selectcheck(false)\">deselect all</a>
				</td>
				<td class=\"tableData\" colspan=\"3\"></td>	
			</tr>
*/