function show(tabname){
	if(document.all){
	document.all.tab1.className = "table_deactivated";
	document.all.tab2.className = "table_deactivated";
	document.all.tab3.className = "table_deactivated";
	document.all.tab4.className = "table_deactivated";
	document.all.tab5.className = "table_deactivated";
	document.all.tab6.className = "table_deactivated";
	//
	document.all[tabname].className = "table_activated";
	//
	document.all.tab1content.style.display = "none";
	document.all.tab2content.style.display = "none";
	document.all.tab3content.style.display = "none";
	document.all.tab4content.style.display = "none";
	document.all.tab5content.style.display = "none";
	document.all.tab6content.style.display = "none";
	//
	document.all[tabname+"_content"].style.display = "block";
	}

	else if(document.getElementById){
	document.getElementById("table_1").className = "table_deactivated";
	document.getElementById("table_2").className = "table_deactivated";
	document.getElementById("table_3").className = "table_deactivated";
	document.getElementById("table_4").className = "table_deactivated";
	document.getElementById("table_5").className = "table_deactivated";
	document.getElementById("table_6").className = "table_deactivated";
	//
	document.getElementById(tabname).className = "table_activated";
	//
	document.getElementById("table_1_content").style.display = "none";
	document.getElementById("table_2_content").style.display = "none";
	document.getElementById("table_3_content").style.display = "none";
	document.getElementById("table_4_content").style.display = "none";
	document.getElementById("table_5_content").style.display = "none";
	document.getElementById("table_6_content").style.display = "none";
	//
	document.getElementById(tabname+"_content").style.display = "block";
	}

}