// JavaScript Document
function setFontSize(size){
	document.getElementById('content_body').style.fontSize=size+'px';
}


//滑动门

function tabMenu(numCrt, numTotal, strBtn, strCon, strCon2)
{	
	if(!document.getElementById) return;
	
	for(var i=1; i<=numTotal; i++)
	{
		var tabID = strBtn + i;
		var conID = strCon + i;
		var conID2 = strCon2 + i;
		
		if(!document.getElementById(tabID)) return;
		if(!document.getElementById(conID)) return;		
		
		var tab = document.getElementById(tabID);
		var con = document.getElementById(conID);
		var con2 = document.getElementById(conID2);
		
		if(numCrt != i)
		{
			if(tab.className.indexOf("active") != -1)
			{
				removeClass(tab,"active");			
				hideObj(con);
				if(con2){
					hideObj(con2);	
				}
			}
		}
		else
		{
			if(tab.className == "" || tab.className.indexOf("active") == -1)
			{
				addClass(tab,"active");
				showObj(con);
				if(con2){
					showObj(con2);
					}
			}
		}
	}
}

function showObj(obj){obj.style.display = "block";}
function hideObj(obj){obj.style.display = "none";}

function addClass(obj, oClass)
{
	if(!obj.className)
	{
		obj.className = oClass;
	}else
	{
		var strClass = obj.className;
		strClass += " ";
		strClass += oClass;
		obj.className = strClass;
	}
}

function removeClass(obj, oClass)
{
	if(obj.className == oClass)
	{
		obj.className = "";
	}
	else if(!obj.className)
	{
		return;
	}else
	{
		var len1 = obj.className.toString().length;
		var len2 = oClass.toString().length;
		var len = len1 - len2;
		var strClass = obj.className.toString().slice(0,len);
		obj.className = strClass;
	}
}


function clearText(obj,str)
{
	if(obj.value == str)
	{
		obj.value = "";
		obj.style.color="#333333";
	}
}
		
function resetText(obj,str)
{
	if(obj.value == "")
	{
		obj.value = str;
		obj.style.color="#999999";
	}
}