var overCk = false;
function imgOverSrc(imgSrc)
{
	var imgSrcArr = imgSrc.split(".");
	var imgSrcNew = "";

	for(var i=0; i<imgSrcArr.length; i++) {
		if(i == (imgSrcArr.length - 1)) {
			imgSrcNew = imgSrcNew + ".";
		}
		imgSrcNew = imgSrcNew + imgSrcArr[i];
		if(i == (imgSrcArr.length - 2)) {
			if(imgSrcArr[i].indexOf("_o") > 0) {
				overCk = true;
			} else {
				imgSrcNew = imgSrcNew + "_o";
			}
		}
	}

	return imgSrcNew;

}
function imgOutSrc(imgSrc)
{
	var imgSrcArr = imgSrc.split("_o.");
	var imgSrcOld = "";
	if(overCk == true) {
		imgSrcOld = imgSrc;
		overCk = false;
	} else {
		for(var i=0; i<imgSrcArr.length; i++) {
			if(i == (imgSrcArr.length - 1)) {
				imgSrcOld = imgSrcOld + ".";
			}
			imgSrcOld = imgSrcOld + imgSrcArr[i];
		}
	}

	return imgSrcOld;
}