function t(obj,mode) {
		name=obj.id;
		if (mode==0) {
			postfix='';
		} else if (mode==1) {
			postfix='_r';
		} else if (mode==2) {
			postfix='_a';
		}
		var newsrc='images/'+name+postfix+'.jpg';
		//alert (newsrc);
		obj.src=newsrc;
		
		
	}