ns4= (document.layers)?true:false;
ie4= (document.all)?true:false;

function wsChangeCollapse(c) {
	if (document.getElementById(c)!=null)
	{
		if (document.getElementById(c).style.display=='none') 
			wsShow(c);
		else
			wsHide(c);
	}
}
function wsShow(c) {
	if (document.getElementById && document.getElementById(c)!= null)
		node = document.getElementById(c).style.display='';
	else if (document.layers && document.layers[c]!= null)
		document.layers[c].display = '';
	else if (document.all)
		document.all[c].style.display = '';
}
function wsHide(c) {
	if (document.getElementById && document.getElementById(c)!= null)
		node = document.getElementById(c).style.display='none';
	else if (document.layers && document.layers[c]!= null)
		document.layers[c].display = 'none';
	else if (document.all)
		document.all[c].style.display = 'none';
}
function wsDisableInput(c)
{
	document.getElementById(c).disabled=true;
}
function wsEnableInput(c)
{
	document.getElementById(c).disabled=false;
}