function ActiveMySrc(epoi){
		var i = 0;
		var igo = true;
		while (igo == true){
		var iope = 'img'+i+'';
			if(document.getElementById(iope) != undefined){
				if(iope == epoi){
					document.getElementById(iope).className = "big_img";
				}else{
					document.getElementById(iope).className = "big_img_hid";
				}
			}else{
			igo = false;
			}
		i++;
		}
	}