number=1;
function e(){
	if(number==1){
		document.e.src="http://www.p-food.com/image/common/e_brand_31y.jpg";
		number=2;
		}
	
	else{
		document.e.src="http://www.p-food.com/image/common/e_brand_31.jpg";
		number=1;
		}
	}