var curr=null;
var hs=new Array();
var ps=new Array();

function getElementsByClassName(clsName) 
{ 
        var arr = new Array(); 
        var elems = document.getElementsByTagName("*");
        for ( var cls, i = 0; ( elem = elems[i] ); i++ )
        {
                if ( elem.className == clsName )
                {
                        arr[arr.length] = elem;
                }
        }
        return arr;
}
function initNav(){
        var faq=document.getElementById("nav");
        hs=getElementsByClassName("nav_title");
        ps=getElementsByClassName("nav_content");
        for (var i=0;i<hs.length;i++){
                hs[i].id='a_syy_'+i;
                ps[i].id=hs[i].id+'_x';
                
                hs[i].onclick=function(){
                        if (curr!=null&&curr!=this.id){
                                document.getElementById(curr+"_x").style.display='none';
                                //document.getElementById(curr).style.background='none';<!--打开过的菜单背景-->
								document.getElementById(curr).style.color='#000';
                        }
                        var s=document.getElementById(this.id+"_x").style;
                        s.display=((s.display=='none')?'block':'none');
                        if (s.display!='none'){
                                curr=this.id;
                               // this.style.background='nonoe';<!--按下鼠标时的背景-->
								this.style.color='#003CB3';
                        }
                        else{
                                curr=null;
                               // this.style.background='none';<!--最后闭合的菜单背景-->
								this.style.color='#000';
								
                        }
                }
                hs[i].onmouseover=function(){
                        //this.style.background='none';<!--鼠标经过背景-->
						this.style.color='#003CB3';
                }
                hs[i].onmouseout=function(){
                        //this.style.background=(document.getElementById(this.id+"_x").style.display=='none')?'none':'none';
                        this.style.color=(document.getElementById(this.id+"_x").style.display=='none')?'#000':'#003CB3';
                }<!--闭合菜单&打开菜单在鼠标滑过时的背景-->


		//  这里修改 自动展开的项目顺序ID
		 //if (i!=0) {
                        hs[i].style.cursor='hand';
                         ps[i].style.display='none';
						 
		//}

                }
                i=0;
      					hs[i].id='a_syy_'+i;
                ps[i].id=hs[i].id+'_x';
                var s=document.getElementById(hs[i].id+"_x").style;
                s.display=((s.display=='none')?'block':'none');
                if (s.display!='none'){
                                curr=hs[i].id;
								                hs[i].style.color='#003CB3';
                 }
                else{
                       hs[i].style.color='#000';
								}
                     
}