function chg_image(strThbImgName,size_w,size_h,strBackPath,strId,strBigImageName,b_width,b_height,strAdminSts,strDispCode){
	if( strBigImageName != "" && b_width > 320 && b_height > 340 ){
		document.getElementById("art_d_main_img_base").innerHTML = "<a href=\"" + strBackPath + "\" onclick=\"win01('./detail_image.php?product_id="+ strId + "&image=" + strBigImageName + strAdminSts + "','" + strDispCode + "','" + b_width + "','" + b_height + "'); return false;\" target=\"_blank\"><img id=\"detail_main_image\" src=\"\" /></a>";
		document.getElementById("fobg_btn_unit").innerHTML = "<a href=\"" + strBackPath + "\" onclick=\"win01('./detail_image.php?product_id="+ strId + "&image=" + strBigImageName + strAdminSts + "','" + strDispCode + "','" + b_width + "','" + b_height + "'); return false;\" target=\"_blank\"><img src=\"../img/products/b_expansion.gif\" width=\"85\" height=\"13\" alt=\"画像を拡大する\" /></a>";
	}else{
		document.getElementById("art_d_main_img_base").innerHTML = "<img id=\"detail_main_image\" src=\"\" />";
		document.getElementById("fobg_btn_unit").innerHTML = "";
	}
	document.getElementById("detail_main_image").src = strThbImgName;
	
	if( size_w > 260 ){
		document.getElementById("detail_main_image").width = 260;
		document.getElementById("detail_main_image").height = size_h * ( 260 / size_w );
	}else if( size_h > 260 ){
		document.getElementById("detail_main_image").height = 260;
		document.getElementById("detail_main_image").width = size_h * ( 260 / size_h );
	}
}