var imgArray = new Array();
var IMG_OVER = 0;
var IMG_OUT = 1;

function commonPreload()
{
	setRollover("menu_item1","images/side_hajimete1.png","images/side_hajimete2.png");
	setRollover("menu_item2","images/side_anshin1.png","images/side_anshin2.png");
	setRollover("menu_item3","images/side_cb1.png","images/side_cb2.png");
	setRollover("menu_item4","images/side_nagare1.png","images/side_nagare2.png");
	setRollover("menu_item5","images/side_shitsumon1.png","images/side_shitsumon2.png");
	setRollover("menu_item6","images/side_moushikomi1.png","images/side_moushikomi2.png");
	setRollover("menu_item7","images/side_toiawase1.png","images/side_toiawase2.png");
	setRollover("menu_item8","images/side_home1.png","images/side_home2.png");
	setRollover("menu_item9","images/side_kaisyaannai1.png","images/side_kaisyaannai2.png");
	setRollover("menu_item10","images/side_tokutei1.png","images/side_tokutei2.png");
	setRollover("menu_item11","images/side_kojinjoho1.png","images/side_kojinjoho2.png");
	setRollover("menu_item12","images/side_keihyo1.png","images/side_keihyo2.png");
}
function setRollover(name,out_img_src,in_img_src)
{
	imgArray[name + IMG_OUT] = new Image();
	imgArray[name + IMG_OVER] = new Image();
	imgArray[name + IMG_OUT].src = out_img_src;
	imgArray[name + IMG_OVER].src = in_img_src;
	
	var obj = document.getElementById(name);
	obj.onmouseover = function(){obj.setAttribute("src",in_img_src);};
	obj.onmouseout = function(){obj.setAttribute("src",out_img_src);};
}