function CheckOthers(form)
{
	for (var i=0;i<form.elements.length;i++)
	{
		var e = form.elements[i];
//		if (e.name != 'chkall')
			if (e.checked==false)
			{
				e.checked = true;// form.chkall.checked;
			}
			else
			{
				e.checked = false;
			}
	}
}

function CheckAll(form)
{
	for (var i=0;i<form.elements.length;i++)
	{
		var e = form.elements[i];
//		if (e.name != 'chkall')
			e.checked = true// form.chkall.checked;
	}
}
function left_s(str){
	for(i=1;i<=3;i++){
		if(i==str){
		eval("left" + i + ".style.display='block'");
		}else{
		eval("left" + i + ".style.display='none'");
		}
	}
}