function tab(tab , obj){
             //alert(obj.rel);
            var tabs = window.document.getElementById(tab).getElementsByTagName('a');
            for(i = 0 ; i < tabs.length ; i++){
                var thisT = window.document.getElementById(tabs[i].rel);
                if(obj.rel == tabs[i].rel){
                    thisT.className = 'contentBoxOn';
                    tabs[i].childNodes[0].src = tabs[i].childNodes[0].src.replace("_off.gif", "_on.gif");
                    //alert("같다"+tabs[i].childNodes[0].src);

                }else{
                    thisT.className = 'contentBoxOff';
                    tabs[i].childNodes[0].src = tabs[i].childNodes[0].src.replace("_on.gif", "_off.gif");
                    //alert("다르다"+tabs[i].childNodes[0].src);
                }

               // alert(window.document.getElementById(tabs[i].rel).className  );
            }
            //alert(window.document.getElementById(tab).getElementsByTagName('a').length);
            //window.document.getElementById('tab1_spssc').className = 'contentBoxOn';
        }
         function tabset(tab , obj){
             //alert(obj.rel);
            var tabs = window.document.getElementById(tab).getElementsByTagName('a');
            for(i = 0 ; i < tabs.length ; i++){
                var thisT = window.document.getElementById(tabs[i].rel);
                if(obj == tabs[i].rel){
                    thisT.className = 'contentBoxOn';
                    tabs[i].childNodes[0].src = tabs[i].childNodes[0].src.replace("_off.gif", "_on.gif");
                    //alert("같다"+tabs[i].childNodes[0].src);

                }else{
                    thisT.className = 'contentBoxOff';
                    tabs[i].childNodes[0].src = tabs[i].childNodes[0].src.replace("_on.gif", "_off.gif");
                    //alert("다르다"+tabs[i].childNodes[0].src);
                }

               // alert(window.document.getElementById(tabs[i].rel).className  );
            }
            //alert(window.document.getElementById(tab).getElementsByTagName('a').length);
            //window.document.getElementById('tab1_spssc').className = 'contentBoxOn';
        }