function STSHtmlEncode(str)
{
	var strOut="";
	var ix=0;
	for (ix=0; ix < str.length; ix++)
	{
		var ch=str.charAt(ix);
		switch (ch)
		{
			case '<':
				strOut+="&lt;";
				break;
			case '>':
				strOut+="&gt;";
				break;
			case '&':
				strOut+="&amp;";
				break;
			case '\"':
				strOut+="&quot;";
				break;
			case '\'':
				strOut+="&#39;";
				break;
			default:
				strOut+=ch;
				break;
		}
   }
   return strOut;
}

function ShowDropdown(textboxId)
{
	var ctrl=document.getElementById(textboxId);
	var str=ctrl.value;
	var opt=EnsureSelectElement(ctrl, ctrl.opt);
	ctrl.match=FilterChoice(opt, ctrl, "", ctrl.value);
	ctrl.focus();
}

function EnsureSelectElement(ctrl, strId)
{
	var select=document.getElementById(strId);
	if (select==null)
	{
		select=document.createElement("SELECT");
		ctrl.parentNode.appendChild(select);
		select.outerHTML="<select id=\""+strId+"\" ctrl=\""+ctrl.id+"\" class=\"lookuptypeindropdown\" name=\""+strId+"\" style=\"display:none\" onfocusout=\"OptLoseFocus(this)\"></select>";
		FilterChoice(select, ctrl, ctrl.value, "");
	}
	return document.getElementById(strId);;
}
function AbsLeft(obj)
{
	var x=obj.offsetLeft;
	var parent=obj.offsetParent;
	while (parent.tagName !="BODY")
	{
		x+=parent.offsetLeft;
		parent=parent.offsetParent;
	}
	x+=parent.offsetLeft;
	return x;
}
function AbsTop(obj)
{
	var y=obj.offsetTop;
	var parent=obj.offsetParent;
	while (parent.tagName !="BODY")
	{
		y+=parent.offsetTop;
		parent=parent.offsetParent;
	}
	y+=parent.offsetTop;
	return y;
}
function FilterChoice(opt, ctrl, strVal, filterVal)
{
	var i;
	var cOpt=0;
	var bSelected=false;
	var strHtml="";
	var strId=opt.id;
	var strName=opt.name;
	var strMatch="";
	var strMatchVal="";
	var strOpts=ctrl.choices;
	var rgopt=strOpts.split("|");
	var x=AbsLeft(ctrl);
	var y=AbsTop(ctrl)+ctrl.offsetHeight;
	var strHidden=ctrl.optHid;
	var iMac=rgopt.length - 1;
	var iMatch=-1;
	var unlimitedLength=false;
	var strSelectedLower="";
	if (opt !=null && opt.selectedIndex >=0)
	{
		bSelected=true;
		strSelectedLower=opt.options[opt.selectedIndex].innerText;
	}
	for (i=0; i < rgopt.length; i=i+2)
	{
		var strOpt=rgopt[i];
		while (i < iMac - 1 && rgopt[i+1].length==0)
		{
			strOpt=strOpt+"|";
			i++;
			if (i < iMac - 1)
			{
				strOpt=strOpt+rgopt[i+1];
			}
			i++;
		}
		var strValue=rgopt[i+1];
		var strLowerOpt=strOpt.toLocaleLowerCase();
		var strLowerVal=strVal.toLocaleLowerCase();
		if (filterVal.length !=0)
			bSelected=true;
		if (strLowerOpt.indexOf(strLowerVal)==0)
		{
			var strLowerFilterVal=filterVal.toLocaleLowerCase();
			if ((strLowerFilterVal.length !=0) && (strLowerOpt.indexOf(strLowerFilterVal)==0) && (strMatch.length==0))
				bSelected=false;
			if (strLowerOpt.length > 20)
			{
				unlimitedLength=true;
			}
			if (!bSelected || strLowerOpt==strSelectedLower)
			{
				strHtml+="<option selected value=\""+strValue+"\">"+STSHtmlEncode(strOpt)+"</option>";
				bSelected=true;
				strMatch=strOpt;
				strMatchVal=strValue;
				iMatch=i;
			}			
			else
			{
				strHtml+="<option value=\""+strValue+"\">"+STSHtmlEncode(strOpt)+"</option>";
			}
			cOpt++;
		}
	}
	var strHandler=" onclick=\"HandleOptDblClick()\" onkeydown=\"HandleOptKeyDown()\"";
	var strOptHtml="";
	if (unlimitedLength)
	{
		strOptHtml="<select tabIndex=\"-1\" ctrl=\""+ctrl.id+"\" name=\""+strName+"\" id=\""+strId+"\""+strHandler;
	}
	else
	{
		strOptHtml="<select class=\"lookuptypeindropdown\" tabIndex=\"-1\" ctrl=\""+ctrl.id+"\" name=\""+strName+"\" id=\""+strId+"\""+strHandler;
	}
	if (cOpt==0)
	{
		strOptHtml+=" style=\"display:none;position:absolute;z-index:2;left:"+x+			"px;top:"+y+			"px\" onfocusout=\"OptLoseFocus(this)\"></select>";
	}
	else
	{
		strOptHtml+=" style=\"position:absolute;z-index:2;left:"+x+			"px;top:"+y+			"px\""+			" size=\""+(cOpt <=8 ? cOpt : 8)+"\""+			(cOpt==1 ? "multiple=\"true\"" : "")+			" onfocusout=\"OptLoseFocus(this)\">"+			strHtml+			"</select>";
	}
	opt.outerHTML=strOptHtml;
	var hid=document.getElementById(strHidden);
	if (iMatch !=0 || rgopt[1] !="0" )
		hid.value=strMatchVal;
	else
		hid.value="0";
	if (iMatch !=0 || rgopt[1] !="0" )
		return strMatch;
	else return "";
}
function HandleChar()
{
	var ctrl=event.srcElement;
	var str=ctrl.value;
	var opt=document.getElementById(ctrl.opt);
	var key=event.keyCode;
	if (key==13)
		return;
	str=str+String.fromCharCode(key).toLocaleLowerCase();
	ctrl.match=FilterChoice(opt, ctrl, str, "");
}
function HandleLoseFocus()
{
	var ctrl=event.srcElement;
	var opt=document.getElementById(ctrl.opt);
	if (opt !=null && opt.style.display !="none" && document.activeElement !=opt)
		OptLoseFocus(opt);
}
function HandleChange()
{
	var ctrl=event.srcElement;
	var str=ctrl.value;
	var opt=document.getElementById(ctrl.opt);
	ctrl.match=FilterChoice(opt, ctrl, str, "");
}
function HandleKey()
{
	var key=event.keyCode;
	var ctrl=event.srcElement;
	var str=ctrl.value;
	var opt=EnsureSelectElement(ctrl, ctrl.opt);
	var bNeedMatch=false;
	var strLower;
	var strMatchLower;
	switch (key)
	{
	case 8:
		if (str.length > 0)
		{
			str=str.substr(0, str.length - 1);
		}
		bNeedMatch=true;
		break;
	case 16:
	case 17:
	case 18:
		return;
	case 9:
	case 16:
	case 17:
	case 18:
		return;
	case 13:
		strLower=ctrl.value.toLocaleLowerCase();
		strMatchLower=ctrl.match.toLocaleLowerCase();
		if (strMatchLower.indexOf(strLower) !=0)
			ctrl.match=FilterChoice(opt, ctrl, ctrl.value, "");
		if (opt.style.display !="none")
		{
			ctrl.value=ctrl.match;
			opt.style.display="none";
			event.returnValue=false;
		}
		return;
	case 27:
		opt.style.display="none";
		event.returnValue=false;
		return;
	case 38:
		if (opt.style.display !="none")
		{
			if (opt.selectedIndex > 0)
				opt.selectedIndex=opt.selectedIndex - 1;
			else
				opt.selectedIndex=opt.options.length - 1;
			SetCtrlMatch(ctrl, opt);
			event.returnValue=false;
		}
		return;		
	case 40:
		if (opt.style.display !="none" && opt.selectedIndex < opt.options.length - 1)
		{
			opt.selectedIndex=opt.selectedIndex+1;
			SetCtrlMatch(ctrl, opt);
			event.returnValue=false;
			return;
		}
		bNeedMatch=true;
		break;
	case 46:
		break;
	default:
		break;
	}
	if (bNeedMatch);
		ctrl.match=FilterChoice(opt, ctrl, str, "");
}

function OptLoseFocus(opt)
{
	var ctrl=document.getElementById(opt.ctrl);
	if (opt.selectedIndex >=0)
		SetCtrlFromOpt(ctrl, opt);
	opt.style.display="none";
}
function SetCtrlMatch(ctrl, opt)
{
	var hid=document.getElementById(ctrl.optHid);
	hid.value=opt.options[opt.selectedIndex].value;
	if (hid.value !=0)		
		ctrl.match=opt.options[opt.selectedIndex].innerText;
	else
		ctrl.match="";
}
function SetCtrlFromOpt(ctrl, opt)
{
	var hid=document.getElementById(ctrl.optHid);
	hid.value=opt.options[opt.selectedIndex].value;
	if (opt.options[opt.selectedIndex].value==0)
	{
		ctrl.value="";
		ctrl.match="";
	}
	else
	{
		ctrl.value=opt.options[opt.selectedIndex].innerText;
		ctrl.match=ctrl.value;		
	}	
}
function HandleOptDblClick()
{
	var opt=event.srcElement;
	var ctrl=document.getElementById(opt.ctrl);
	SetCtrlFromOpt(ctrl, opt);
	SetCtrlMatch(ctrl, opt);
	opt.style.display="none";
}
function HandleOptKeyDown()
{
	var opt=event.srcElement;
	var ctrl=document.getElementById(opt.ctrl);
	var key=event.keyCode;
	switch (key)
	{
	case 13:
	case 9:
		SetCtrlFromOpt(ctrl, opt)
		event.returnValue=false;
		opt.style.display="none";
		return;
	default:
		break;
	}
	return;
}

/*ÏÔʾÒþ²ØDIV*/
function ShowDiv(id) {
    var divid = document.getElementById(id)
    if (divid.style.display == 'block') {
        divid.style.display = 'None';
    }
    else {
        divid.style.display = 'block'
    }
}