var LastLeftID = "";
	function xl(str)
		{
			dq=document.getElementById(str);
			dqs=document.getElementById(LastLeftID);
			if (str==LastLeftID)
						if (dq.style.display=="")	
							dq.style.display="none";
						else
							dq.style.display=""	
			else
					if (dq.style.display=="")
							{dq.style.display="none";
							if(LastLeftID!= "")
							{
							dqs.style.display="none";
							}
							}
					else
						{
							dq.style.display="";
							if(LastLeftID!= "")
							{
							dqs.style.display="none";
							}
							
						}
					LastLeftID=str;
		}		
		function gs1(Idn){			
			document.getElementById("gs1").style.display="none";
			document.getElementById("gs2").style.display="none";
			document.getElementById(Idn).style.display="";		
		}
		function pic(pic){			
			document.getElementById("pic1").style.display="none";
			document.getElementById("pic2").style.display="none";
			document.getElementById("pic3").style.display="none";
			document.getElementById("pic4").style.display="none";
			document.getElementById("pic5").style.display="none";	
			document.getElementById("pic6").style.display="none";			
			document.getElementById(pic).style.display="";		
		}	
		
		function sch(s){
			document.getElementById("s1").className="s_btn_word_eng";
			document.getElementById("s2").className="s_btn_word_eng";
			document.getElementById("s3").className="s_btn_word";
			document.getElementById("s4").className="s_btn_word";
			document.getElementById("s5").className="s_btn_word";
			document.getElementById("s6").className="s_btn_word";
			document.getElementById(s).className="s_btn_dangqian";					
				
		}