function getq(ele)
{
    var p = ele.parentNode;
    var idx = 0;
    while(p.className != "question" && idx < 30)
    {
		p = p.parentNode;
		idx++;
    }
    if(idx >= 30)
    {
		return null;
	}
	else
	{
		return p;
	}    
}
function setup()
{
	var agt = navigator.userAgent.toLowerCase();
	isIE = (agt.indexOf("msie") != -1 && agt.indexOf("opera") == -1);
	if(isIE)
	{
		try {document.execCommand("BackgroundImageCache", false, true);} catch(err) {}
	}
	var divs=document.getElementsByTagName("div");
	for(var i=0;i<divs.length;i++)
	{
		if(divs[i].className.indexOf("hover")>=0)
		{
			divs[i].onmouseover=function(){this.className = this.className.replace(/hover/gi,"ruled");return false;}
			divs[i].onmouseout=function(){this.className = this.className.replace(/ruled/gi,"hover");return false;}
		}
    }
	var inputs = document.getElementsByTagName("input");
	var label, img, inputID;
	for(var i = 0; i < inputs.length; i++)
	{
		switch(inputs[i].type)
		{
			case "checkbox":			
				label = document.getElementById("l" + inputs[i].id);
				if(inputs[i].checked)
				{
					label.className = label.className.replace("cb_off", "cb_on");
				}
				if(isIE) label.style.position = "relative";
				inputs[i].onclick = function() { cbtoggle(this); }
				inputs[i].onfocus = function() { focus(this); }
				inputs[i].onblur = function() { blur(this); }
				if(isIE)	// IE! ignores images in labels.
				{
					img = label.getElementsByTagName("img")[0];
					img.onclick = function() { this.parentNode.click(); }
				}
				break;
			case "radio":
				label = document.getElementById("l" + inputs[i].id);
				
				if(inputs[i].checked)
				{
					label.className = label.className.replace("rb_off", "rb_on");					
					inputs[i].history = true;
				}
				else
				{
					inputs[i].history = false;
				}
				if(isIE) label.style.position = "relative";
				inputs[i].onclick = function() { rbtoggle(this); }
				inputs[i].onfocus = function() { focus(this); }
				inputs[i].onblur = function() { blur(this); }
				if(isIE)	// IE! ignores images in labels.
				{
					img = label.getElementsByTagName("img")[0];
					img.onclick = function() { this.parentNode.click(); }
				}
				break;
			case "text":
				if(inputs[i].className.indexOf("other") > -1)
				{
					creatediv(inputs[i]);
				}
				break;
		}
	}
	inputs = document.getElementsByTagName("textarea");
	for(var i = 0; i < inputs.length; i++)
	{
		if(inputs[i].className.indexOf("other") > -1)
		{
			creatediv(inputs[i]);
		}
	}
	safari();
}
function focus(input)
{
	if(input)
	{
		var label = document.getElementById("l" + input.id);
		label.parentNode.className = label.parentNode.className + " selected";
	}
}
function blur(input)
{
	var label = document.getElementById("l" + input.id);
	label.parentNode.className = label.parentNode.className.replace(/\s(selected)/gi,"");
}
function cbtoggle(input)
{
	var label = document.getElementById("l" + input.id);
	label.className = "cb_" + ((input.checked) ? "on" : "off") + " selected";
	if(input.other)
	{
		var other = document.getElementById(input.other);
		if(input.className.indexOf("other") > -1 && input.checked)
		{
			other.disabled = false;
		}
		else if(other.value == "")
		{
			other.disabled = true;
		}
	}
}
function rbtoggle(input)
{
	if(input.history == true)
	{
		input.checked = false;
		input.history = false;
	}
	else
	{
		input.history = true;
	}
	var group = new Array();
	var inputs = getq(input).getElementsByTagName("input");
	for(var i = 0; i < inputs.length; i++)
	{
		if(inputs[i].name == input.name)
		{
			group.push(inputs[i]);
		}
	}
	if(input.className.indexOf("col") > -1)
	{
		inputs = input.parentNode.parentNode.parentNode.getElementsByTagName("input");
		for(var i = 0; i < inputs.length; i++)
		{
			if(inputs[i].name != input.name)
			{
				group.push(inputs[i]);
				if(input.checked)
				{
					inputs[i].checked = false;
				}
			}
		}
	}
	var label;
	for(var i = 0; i < group.length; i++)
	{
		label = document.getElementById("l" + group[i].id);
		label.className = "rb_" + ((group[i].checked) ? "on" : "off");
		label.parentNode.className = label.parentNode.className.replace(/\s(selected)/gi,"")
		if(group[i].id == input.id)
		{
			label.parentNode.className = label.parentNode.className + " selected";
		}
		else
		{
			group[i].history = false;
		}
	}
	if(input.other)
	{
		var other = document.getElementById(input.other);
		if(input.className.indexOf("other") > -1 && input.checked)
		{
			other.disabled = false;
		}
		else
		{
			other.disabled = true;
		}
	}
}
function onesubmit(element, delay)
{
	var tagname = element.tagName.toLowerCase();
	
	delay = (delay) ? delay : 1500;
	
	if(tagname == "a")
	{
		var href = element.href;
		var click = element.onclick;
		
		setTimeout(function() { element.href = "javascript:void(0);"; element.onclick = null; }, 0);
		setTimeout(function() { element.href = href; element.onclick = click; }, delay);
	}
	else if(tagname == "input")
	{
		var click = element.onclick;
		
		setTimeout(function() { element.disabled = true; element.onclick = null; }, 0);
		setTimeout(function() { element.disabled = false; element.onclick = click; }, delay);
	}
}
function safari()
{
	var ua = navigator.userAgent.toLowerCase();
    if(ua.indexOf("safari/") > -1 && ua.indexOf("version/") == -1)
	{
		var labels = document.getElementsByTagName("label");
		for(var i = 0; i < labels.length; i++)
		{
			labels[i].onclick = function() { var input = document.getElementById(this.getAttribute("for"));  if(input) input.click(); }
		}
    }
}
function creatediv(text)
{
	text.style.position = "relative";
	var w = text.offsetWidth;
	var h = text.offsetHeight;
	var l = text.offsetLeft;
	var t = text.offsetTop;
	var div = document.createElement("div");
	div.style.position = "absolute";
	div.style.left = l + "px";
	div.style.top = t + "px";
	div.style.width = w + "px";
	div.style.height = h + "px";
	div.style.zIndex = 100;
	div.id = "___" + text.id
	div.onclick = function() { toggleother(this.id.replace("___","")); }
	var other = getother(text);
	if(other)
	{
		switch(other.type)
		{
			case "radio":
			case "checkbox":
				if(other.checked)
				{
					text.disabled = false;
				}
				break;
			case "select-one":
				if(other.selectedIndex == other.options.length - 1)
				{
					text.disabled = false;
				}
				break;
		}
	}
	document.body.appendChild(div);
}
function getother(text)
{
	var el = null;
	
	var q = getq(text);
	
	var inputs = q.getElementsByTagName("input");
	for(var i = 0; i < inputs.length; i++)
	{
		switch(inputs[i].type)
		{
			case "radio":
			case "checkbox":
				inputs[i].other = text.id;
				if(inputs[i].className.indexOf("other") > -1)
				{
					el = inputs[i];
				}
				break;
		}
	}

	inputs = q.getElementsByTagName("select");
	if(inputs.length > 0)
	{
		inputs[0].other = text.id;
		inputs[0].onchange = function() { selectother(this); }
		inputs[0].onkeyup = function() { selectother(this); }
		el = inputs[0];
	}

	return el;
}
function selectother(sel)
{
	var other = document.getElementById(sel.other);
	if(sel.selectedIndex == sel.options.length - 1)
	{
		other.disabled = false;
	}
	else
	{
		other.disabled = true;
	}
}
function toggleother(id)
{
	var input = document.getElementById(id);

	var other = getother(input);

	if(other)
	{
		switch(other.type)
		{
			case "radio":
			case "checkbox":
				if(!other.checked)
					other.click();
					other.parentNode.className = other.parentNode.className.replace(/\s(selected)/gi,"")
				break;
			case "select-one":
				other.selectedIndex = other.options.length - 1;
				break;
		}
	}

	input.disabled = false;
	input.focus();
}

function submitButton(element, delay)
{
	var tagname = element.tagName.toLowerCase();
	
	delay = (delay) ? delay : 1500;
	
	if(tagname == "a")
	{
		var href = element.href;
		var click = element.onclick;
		
		setTimeout(function() { element.href = "javascript:void(0);"; element.onclick = null; }, 0);
		setTimeout(function() { element.href = href; element.onclick = click; }, delay);
	}
	else if(tagname == "input")
	{
		var click = element.onclick;
		
		setTimeout(function() { element.disabled = true; element.onclick = null; }, 0);
		setTimeout(function() { element.disabled = false; element.onclick = click; }, delay);
	}
}
//  加载小按钮时用到
var myimages=new Array();
function preloadimages(){	
	for (i=0;i<preloadimages.arguments.length;i++){
		myimages[i]=new Image();
		//if(myimages[i].complete){
		myimages[i].src=preloadimages.arguments[i];
		//}
	}
}
function preloadImg(img1,img2)
{	
	preloadimages("/servlet/CreateInputImage?c="+img1,"/servlet/CreateInputImage?c="+img2);
	
}