//----------------------------------------------------for_menu
function preload(imgs){
 for(var i = 0; i < imgs.length; i++){
   var imgObj = new Image();
   imgObj.src = imgs[i];
 }
}

preload(["img/common/menu_r1_c1.gif","img/common/menu_r1_c2.gif","img/common/menu_r1_c3.gif","img/common/menu_r1_c4.gif","img/common/menu_r1_c5.gif"]);
preload(["img/common/menu_r2_c1.gif","img/common/menu_r2_c2.gif","img/common/menu_r2_c3.gif","img/common/menu_r2_c4.gif","img/common/menu_r2_c5.gif"]);

function mnchg(obj,pic){
	obj.src='img/common/'+pic;
}

function mnret(obj,pic){
	obj.src='img/common/'+pic;
}

function indmnchg(obj,pic){
	obj.src='img/indv/'+pic;
}

function indmnret(obj,pic){
	obj.src='img/indv/'+pic;
}

//---------------------------------------------------- hide func
function hide(id) {

if (!document.getElementsByTagName) { return false; }
var obj = document.getElementById(id);
if (obj.style.display == "") {
obj.style.display = "block";
} else {
obj.style.display = "";
}
return false;
}

function hidethis(obj){
	obj.style.display = "none";
	return;
}
//----------------------------------------------------hide func