function changeTab(prm){
	
	if(prm=="guanfang")
	{
		document.getElementById("ul_guanfang").style.display="block";
		document.getElementById("ul_huodong").style.display="none";
		//document.getElementById("ul_luntan").style.display="none";
		
		document.getElementById("guanfang").style.backgroundImage = "url('images/tab1.png')";
		document.getElementById("guanfang").style.color = "#ff6600";
		document.getElementById("guanfang").style.textDecoration = "underline";
		
		document.getElementById("huodong").style.backgroundImage = "url('images/tab2.png')";
		document.getElementById("huodong").style.color = "#007dc6";
		document.getElementById("huodong").style.textDecoration = "none";
		
		//document.getElementById("luntan").style.backgroundImage = "url('images/tab2.png')";
		//document.getElementById("luntan").style.color = "#007dc6";
		//document.getElementById("luntan").style.textDecoration = "none";
		
		document.getElementById("more").style.display="block";
		document.getElementById("bbsmore").style.display="none";
		
	}
	else if(prm=="huodong")
	{
		document.getElementById("ul_guanfang").style.display="none";
		document.getElementById("ul_huodong").style.display="block";
		//document.getElementById("ul_luntan").style.display="none";
		
		document.getElementById("guanfang").style.backgroundImage = "url('images/tab2.png')";
		document.getElementById("guanfang").style.color = "#007dc6";
		document.getElementById("guanfang").style.textDecoration = "none";
		
		document.getElementById("huodong").style.backgroundImage = "url('images/tab1.png')";
		document.getElementById("huodong").style.color = "#ff6600";
		document.getElementById("huodong").style.textDecoration = "underline";
		
		//document.getElementById("luntan").style.backgroundImage = "url('images/tab2.png')";
		//document.getElementById("luntan").style.color = "#007dc6";
		//document.getElementById("luntan").style.textDecoration = "none";
		
		document.getElementById("more").style.display="block";
		document.getElementById("bbsmore").style.display="none";
	}
	
	else if(prm=="luntan")
	{
	    document.getElementById("ul_guanfang").style.display="none";
		document.getElementById("ul_huodong").style.display="none";
		//document.getElementById("ul_luntan").style.display="block";
		
		document.getElementById("guanfang").style.backgroundImage = "url('images/tab2.png')";
		document.getElementById("guanfang").style.color = "#007dc6";
		document.getElementById("guanfang").style.textDecoration = "none";		
		
		document.getElementById("huodong").style.backgroundImage = "url('images/tab2.png')";
		document.getElementById("huodong").style.color = "#007dc6";
		document.getElementById("huodong").style.textDecoration = "none";
		
		//document.getElementById("luntan").style.backgroundImage = "url('images/tab1.png')";
		//document.getElementById("luntan").style.color = "#ff6600";
		//document.getElementById("luntan").style.textDecoration = "underline";
		
		document.getElementById("more").style.display="none";
		document.getElementById("bbsmore").style.display="block";
	}
	
	else if(prm=="wanjia")
	{
		//document.getElementById("ul_wanjia").style.display="block";
		document.getElementById("ul_meiti").style.display="none";
		
		//document.getElementById("wanjia").style.backgroundImage = "url('images/tab1.png')";
		//document.getElementById("wanjia").style.color = "#ff6600";
		//document.getElementById("wanjia").style.textDecoration = "underline";
		
		document.getElementById("meiti").style.backgroundImage = "url('images/tab2.png')";
		document.getElementById("meiti").style.color = "#007dc6";
		document.getElementById("meiti").style.textDecoration = "none";
	}
	
	else if(prm=="meiti")
	{
		//document.getElementById("ul_wanjia").style.display="none";
		document.getElementById("ul_meiti").style.display="block";
		
		//document.getElementById("wanjia").style.backgroundImage = "url('images/tab2.png')";
		//document.getElementById("wanjia").style.color = "#007dc6";
		//document.getElementById("wanjia").style.textDecoration = "none";
		
		document.getElementById("meiti").style.backgroundImage = "url('images/tab1.png')";
		document.getElementById("meiti").style.color = "#ff6600";
		document.getElementById("meiti").style.textDecoration = "underline";
	}	
}