sampleTabStyleName='';

var lastTab=new Array();
var lastTabContents = new Array();

function showTab(obj){
	tab_group=(obj.id.substr(obj.id.indexOf('-',obj.id.indexOf('-')+1)+1));

	if (sampleTabStyleName==''){
		sampleTabStyleName=obj.className;
	}
	if ((lastTab[tab_group]!= null)&& (lastTabContents[tab_group]!=null)){
	//	lastTabContents[tab_group].style.display="none";
	    lastTabContents[tab_group].style.display='none';
		lastTab[tab_group].className=sampleTabStyleName;
	}
	contentTab = document.getElementById(obj.id + "-contents");
	contentTab.style.display='block';
	obj.className = sampleTabStyleName + " active";
	lastTabContents[tab_group] = contentTab;
	lastTab[tab_group] = obj;
}