var m_src;

function swapImg(obj,bOver){
	obj.src=((bOver)?obj.imgOver:obj.img);
}

function init(){
	var j;
	var a = document.getElementsByTagName("a");
	for(j=0;j<a.length;j++) {a[j].onclick=a[j].blur;} // to remove selection with ff when use back on browser
	var s,p;
	var i = document.getElementsByTagName("img");
	for (j=0;j<i.length;j++){
		// i[j].getAttribute("swp");
		if (i[j].className != "swp") continue;
		// preload img (must be global)
		i[j].pImg=new Image();
		i[j].img = s = i[j].src;
		p=s.lastIndexOf(".");
		i[j].imgOver = i[j].pImg.src = s.substr(0,p)+"-o"+s.substr(p);
		if (navigator.userAgent.indexOf("MSIE") != -1)i[j].alt="";
		// events handler
		i[j].onmouseover = new Function("swapImg(this,1);");
		i[j].onmouseout = new Function("swapImg(this);");
		i[j].onclick = new Function("swapImg(this);"); // without this, ff show imgOver when use back on browser
	}
}