function gnway_tab_page_by_tongfu(btnDiv,btnClassName){
    this.btns=new Array();
    var ttbtns=btnDiv.getElementsByTagName("A");
    var i=0;
    var j=0;
    for(i=0;i<ttbtns.length;i++){
    	if(ttbtns[i].className==btnClassName){
    		this.btns[j]=ttbtns[i];
    		j++;
    	}
    }
    this.contents=document.getElementsByName("tab_page_css_content");
    this.sz;
    this.init=function(){
        this.sz=this.btns.length;
        for(ii=0;ii<this.sz;ii++){
            this.btns[ii].ctrl=this;
            this.btns[ii].id=ii;
            this.btns[ii].onmouseover=function(){
                this.ctrl.closeAll();
                this.ctrl.show(this.id);
            }
        }
        this.closeAll();
        this.show(0);
    }
    this.closeAll=function(){
        for(ii=0;ii<this.sz;ii++){
            this.btns[ii].className = '';
            if(this.contents[ii] != null)
                this.contents[ii].style.display='none';
        } 
    }
    this.show=function(id){
        this.btns[id].className = 'cur';
        if(this.contents[id] != null)
            this.contents[id].style.display='';
    }
    this.init();
}