function mapExpend(cObj, isEnd) {
	expendImgSrcArray = new Array(new Array("/images/sitemap_minus_2_1066776.gif","/images/sitemap_plus_2_1066783.gif"),new Array("/images/lminus_1067694.gif","/images/lplus_1067699.gif"));
	folderImgSrcArray = new Array("/images/mapmenu_folder_closed_2_1066785.gif","/images/mapmenu_folder_open_2_10667.gif");


	if (isEnd == 1) {
		expendImgSrc = expendImgSrcArray[1];
	} else {
		expendImgSrc = expendImgSrcArray[0];
	}
	var obj = document.getElementById(cObj + "a");
	var objArrow = document.getElementById(cObj);
	var objFolder = document.getElementById(cObj + "_folder");
	if (obj.style.display == "none") {
		obj.style.display = "block";
		objArrow.src = expendImgSrc[0];
		objFolder.src = folderImgSrcArray[1];
	} else {
		obj.style.display = "none";
		objArrow.src = expendImgSrc[1];
		objFolder.src = folderImgSrcArray[0];
	}
}