function e(id)
{
	return document.getElementById(id)?document.getElementById(id):false;
}


function onTabClick(str_mode){


	if (!e("tab-food")){
		return;
	} else {
		tab_food2 = e("tab-food");
	}	
	
	if (!e("tab-trade")){
		return;
	} else {   
		tab_trade2 = e("tab-trade");
	}


	
	if (!e("food_tabs")){
		return;
	} else {
		obj_food_tabs = e("food_tabs");
	}
	
	if (!e("trade_tabs")){
		return;
	} else {
		obj_trade_tabs = e("trade_tabs");
	}
	//alert(trade_tabs + "?");
	
	if (str_mode=="food" ){
		tab_food2.className ="tab-on";
		tab_trade2.className ="tab-off";
		
		obj_trade_tabs.style.display = "none";
		obj_food_tabs.style.display = "";
		
		if (e("body_table")){
			e("body_table").className = "bg_rest";
		}
	} else if (str_mode == "trade" ){
	
		tab_food2.className ="tab-off";
		tab_trade2.className ="tab-on";
		
		obj_trade_tabs.style.display = "";
		obj_food_tabs.style.display = "none";	
		
		if (e("body_table")){
			e("body_table").className = "bg_trade";
		}	
	}
}