var dateObj = new Date();

if(dateObj.getMonth()+1 == 1 && (dateObj.getDate() >= 1 && dateObj.getDate() <= 7)){
	document.write("<img src=\"/images/logo_newyear.gif\" width=\"235\" height=\"225\" />");
}else if(dateObj.getDay() == 1){
	document.write("<img src=\"/images/logo_gachinko.gif\" width=\"235\" height=\"225\" />");
}else if(dateObj.getDay() == 2){
	document.write("<img src=\"/images/logo_smile.gif\" width=\"235\" height=\"225\" />");
}else if(dateObj.getDay() == 4){
	document.write("<img src=\"/images/logo_yowaki.gif\" width=\"235\" height=\"225\" />");
}else{
	document.write("<img src=\"/images/logo_normal.gif\" width=\"235\" height=\"225\" />");
}