var IS_IE = window.ActiveXObject ? true : false;

function O(id){return document.getElementById(id);}

function autoCheck(eleName,checkedValues)
{
	var eles = document.getElementsByName(eleName);
	for(var i=0;i<checkedValues.length;i++)
	{
		for(var j=0;j<eles.length;j++)
		{
			if(eles[j].value==checkedValues[i])
			{
				eles[j].checked = true;
				break;
			}
		}
	}
}

function autoSelect(id,selectedValue)
{
	var ele = document.getElementById(id);
	for(var i=0;i<ele.options.length;i++)
	{
		if(ele.options[i].value==selectedValue)
		{
			ele.options[i].selected = true;
			break;
		}
	}
}

function make_day_option(dayId,yearId,monthId,defaultValue)
{
	var year = document.getElementById(yearId).value;
	var month = document.getElementById(monthId).value;
	var date = new Date(year,month,0);
	var days = date.getDate();
	var dayEle = document.getElementById(dayId);
	for(var i=0;i<dayEle.options.length;i++)
	{
		dayEle.remove(0);
	}
	for(var i=0;i<days;i++)
	{
		dayEle.options[i] = document.createElement("OPTION");
		if(i<9)
		{
			dayEle.options[i].text = "0" + (i+1);
			dayEle.options[i].value = "0" + (i+1);
			if(defaultValue && "0"+(i+1)==defaultValue) dayEle.options[i].selected = true;
		}
		else
		{
			dayEle.options[i].text = i+1;
			dayEle.options[i].value = i+1;
			if(defaultValue && i+1==defaultValue) dayEle.options[i].selected = true;
		}
	}
}

function get_element_position(ele)
{
	var obj = {left:ele.offsetLeft,top:ele.offsetTop,x:0,y:0};
	var parent = ele;
	while(parent = parent.offsetParent)
	{
		obj.left += parent.offsetLeft;
		obj.top += parent.offsetTop;
	}
	obj.x = obj.left - (document.documentElement.scrollLeft==0 ? document.body.scrollLeft : document.documentElement.scrollLeft);
	obj.y = obj.top - (document.documentElement.scrollTop==0 ? document.body.scrollTop : document.documentElement.scrollTop);
	return obj;
}

function get_page_size()
{
	var ie = document.all ? true : false;
	var xmlns = ie ? !(document.documentElement.clientWidth==0 && document.documentElement.clientHeight==0) : (document.doctype && document.doctype.systemId);
	if(ie)
	{
		if(xmlns)
		{
			return {
					screen_width : document.documentElement.clientWidth,
					screen_height : document.documentElement.clientHeight,
					page_width : document.documentElement.scrollWidth,
					page_height : document.documentElement.scrollHeight,
					scroll_width : document.documentElement.scrollLeft,
					scroll_height : document.documentElement.scrollTop
					};
		}
		else
		{
			return {
					screen_width : document.body.clientWidth,
					screen_height : document.body.clientHeight,
					page_width : document.body.scrollWidth,
					page_height : document.body.scrollHeight,
					scroll_width : document.body.scrollLeft,
					scroll_height : document.body.scrollTop
					};
		}
	}
	else
	{
		if(xmlns)
		{
			return {
					screen_width : document.documentElement.clientWidth,
					screen_height : document.documentElement.clientHeight,
					page_width : document.documentElement.scrollWidth,
					page_height : document.documentElement.scrollHeight,
					scroll_width : document.documentElement.scrollLeft,
					scroll_height : document.documentElement.scrollTop
					};
		}
		else
		{
			return {
					screen_width : document.body.clientWidth,
					screen_height : document.body.clientHeight,
					page_width : document.body.scrollWidth,
					page_height : document.body.scrollHeight,
					scroll_width : document.body.scrollLeft,
					scroll_height : document.body.scrollTop
					};
		}
	}
}

function show_div(divId,relEle,x_dir,y_dir,zIndex)
{
	var pos = get_element_position(relEle);
	var size = get_page_size();
	var div = document.getElementById(divId);
	div.style.position = "absolute";
	div.style.display = "";
	if(zIndex) div.style.zIndex = zIndex;
	switch(x_dir)
	{
		case "left":
			div.style.left = pos.left + "px";
			break;
		case "right":
			div.style.left = pos.left + relEle.offsetWidth - div.offsetWidth + "px";
			break;
		case "auto":
		default:
			if(pos.x + div.offsetWidth < size.clientWidth)
			{
				div.style.left = pos.left + "px";
			}
			else
			{
				div.style.left = pos.left + relEle.offsetWidth - div.offsetWidth + "px";
			}
			break;
	}
	switch(y_dir)
	{
		case "top":
			div.style.top = pos.top - div.offsetHeight + "px";
			break;
		case "bottom":
			div.style.top = pos.top + relEle.offsetHeight + "px";
			break;
		case "auto":
		default:
			if(pos.y + relEle.offsetHeight + div.offsetHeight < size.clientHeight)
			{
				div.style.top = pos.top + relEle.offsetHeight + "px";
			}
			else
			{
				div.style.top = pos.top - div.offsetHeight + "px";
			}
			break;
	}
}
function to_center(id,zIndex)
{
	var size = get_page_size();
	var ele = document.getElementById(id);
	ele.style.display = "";
	ele.style.position = "absolute";
	ele.style.zIndex = (zIndex ? zIndex : 10);
	ele.style.left = (size.screen_width - ele.offsetWidth)/2 + size.scroll_width + "px";
	ele.style.top = (size.screen_height - ele.offsetHeight)/2 + size.scroll_height + "px";
}

function checkAll(inputName,checked)
{
	var inputors = document.getElementsByName(inputName);
	for(var i=0;i<inputors.length;i++)
	inputors[i].checked = checked;
}
function removeChildren(ele)
{
	 while(ele.hasChildNodes())
	 {
		  if(ele.lastChild.hasChildNodes()) removeChildren(ele.lastChild);
		  else ele.removeChild(ele.lastChild);
	 }
}
function removeSelf(ele)
{
	 removeChildren(ele);
	 ele.parentNode.removeChild(ele);
}
function show_mask_msg(msg,icon,zIndex)
{
	hide_mask_msg();
	var table = document.createElement("TABLE");
	table.id = "MASK_SCREEN_MESSAGE_ID";
	table.style.display = "none";
	table.style.border = "#666666 solid 2px";
	table.style.color = "#000000";
	table.bgColor = "#DDFFDD";
	table.cellPadding = 0;
	table.cellSpacing = 0;
	var tbody = document.createElement("TBODY");
	var tr = document.createElement("TR");
	if(icon)
	{
		var iconTd = document.createElement("TD");
		iconTd.align = "center";
		iconTd.vAlign = "middle";
		iconTd.style.paddingLeft = "20px";
		iconTd.style.paddingRight = "20px"
		iconTd.style.paddingTop = "20px";
		iconTd.style.paddingBottom = "20px";
		var iconImg = new Image();
		iconImg.src = icon;
		iconImg.border = 0;
		iconTd.appendChild(iconImg);
		tr.appendChild(iconTd);
	}
	msg ? msg : msg="正在处理，处理稍候……";
	var msgTd = document.createElement("TD");
	msgTd.width = 200;
	msgTd.align = "left";
	msgTd.vAlign = "middle";
	msgTd.style.paddingLeft = icon ? "0px" : "20px";
	msgTd.style.paddingRight = "20px";
	msgTd.style.paddingTop = "20px";
	msgTd.style.paddingBottom = "20px";
	msgTd.innerHTML = msg;
	tr.appendChild(msgTd);
	tbody.appendChild(tr);
	table.appendChild(tbody);
	document.body.appendChild(table);
	to_center("MASK_SCREEN_MESSAGE_ID",zIndex?zIndex:10);
}
function hide_mask_msg()
{
	var msgObj = document.getElementById("MASK_SCREEN_MESSAGE_ID");
	if(msgObj) removeSelf(msgObj);
}
function set_mask_options(opts)
{
	var size = get_page_size();
	opts ? 1 : opts = { opacity : 0.3, zIndex : 10, bgColor : "#000000" };
	opts.opacity ? 1 : opts.opacity = 0.3;
	opts.zIndex ? 1 : opts.zIndex = 10;
	opts.bgColor ? 1 : opts.bgColor = "#000000";
	var mask_obj = document.getElementById("SCREEN_MASK_ID");
	mask_obj.style.cssText = "filter:alpha(opacity:" + opts.opacity*100 + "); opacity:" + opts.opacity + ";";
	mask_obj.style.display = "block";
	mask_obj.style.position = "absolute";
	mask_obj.style.left = "0px";
	mask_obj.style.top = "0px";
	mask_obj.style.width = (size.screen_width>size.page_width?size.screen_width:size.page_width) + "px";
	mask_obj.style.height = (size.screen_height>size.page_height?size.screen_height:size.page_height) + "px";
	mask_obj.style.zIndex = opts.zIndex;
	mask_obj.style.backgroundColor = opts.bgColor;
}
function create_mask(options)
{
	var mask_div = document.createElement("DIV");
	mask_div.id = "SCREEN_MASK_ID";
	document.body.appendChild(mask_div);
	set_mask_options(options);
}
function mask_screen_no_msg(options)
{
	var mask_div = document.getElementById("SCREEN_MASK_ID");
	if(mask_div) set_mask_options(options);
	else create_mask(options);
}
function unmask_screen_no_msg()
{
	var mask_div = document.getElementById("SCREEN_MASK_ID");
	if(mask_div) mask_div.style.display = "none";
}
function mask_screen(options,msg,icon,msg_zIndex)
{
	mask_screen_no_msg(options);
	hide_mask_msg();
	show_mask_msg(msg,icon,msg_zIndex);
}
function unmask_screen()
{
	hide_mask_msg();
	unmask_screen_no_msg();
}
function disable_screen(options,msg,icon)
{
	mask_screen(options);
}
function enable_screen()
{
    unmask_screen();
}
function bindEvent(object,eventType,eventHandle)
{
	var ie = document.all ? true : false;
	if(ie) object.attachEvent("on"+eventType,eventHandle);
	else object.addEventListener(eventType,eventHandle,false);
}
function include(src)
{
    var scriptTag = document.createElement("SCRIPT");
    scriptTag.type = "text/javascript";
    scriptTag.src = src;
    var head = document.getElementsByTagName("HEAD");
    head = head[0];
    head.appendChild(scriptTag);
}