function OpenUrl(name, URL)
{
	window.open(URL, name, "menubar=0,toolbar=1,scrollbars=1,resizable=1,status=1,width=640,height=480");
}

function CheckAll(obj)
{
	obj = eval(obj);
	if (obj!=null) {
		if (isFinite(obj.length)) {
			chk = true;
			for (i=0; i<obj.length; i++)
				chk = chk && obj[i].checked;
			for (i=0; i<obj.length; i++)
				obj[i].checked = !chk;	
		} else {
			obj.checked = !obj.checked;	
		}
	} 
}

function InitChkbox(obj)
{
	obj = eval(obj);
	if (obj!=null) {
		if (isFinite(obj.length)) {
			chk = false;
			for (i=0; i<obj.length; i++)
				chk = chk || obj[i].checked;
			if (!chk)
				CheckAll(obj);
		} else {
			if (!obj.checked)
				obj.checked = true;
		}
	}	
}

function click_option(opt_obj)
{
	Options = new Array("sm", "h", "e", "f", "l");

	
	chk = opt_obj.checked;
	for (i=0; i<Options.length; i++) {
		obj = eval("document.search_form." + Options[i]);
		if (chk && opt_obj.name!=Options[i])
			obj.checked = false;
	}	
}


/**************************************************************************************
	@ author		: joseph peng
	@ function		: to expand/eclipse some layer
	@ input			: document object
	@ datetime		: 2004.06.07
**************************************************************************************/
function jp__showHideLayer(oLayer, oImg)
{
	if (oLayer.style.display=='block') {
		oLayer.style.display='none';
		//oImg.src="images/Plus.gif";
		oImg.src="images/plus_01.gif";
	}
	else {
		oLayer.style.display='block';
		//oImg.src="images/Minus.gif";
		oImg.src="images/minus_01.gif";
	}
}