function changeNowOrver() {
	if(navigator.appVersion.indexOf("Mac") != -1) {
		if(navigator.appName.indexOf("Microsoft") != -1) {
			for(i=0; i<document.all.length; i++) {
				if(document.all(i).tagName == 'A') {
					var objA = document.all(i);
					var strNowUrl = location.href;
					var strCheckUrl = objA.href;
					if(strNowUrl == strCheckUrl) {
						if(document.all(i+1).tagName == 'IMG') {
							var objIMG = document.all(i+1);
							if(objIMG.className == 'over') {
								if(objIMG.src.indexOf("_cr") == -1) {
									objIMG.src = objIMG.src.replace(/(\.gif|\.jpg|\.png)/, "_cr$1");
								}
							}
						}
					}
				}
			}
		} else {
			var aryObj = document.getElementsByTagName('*');
			for(i=0; i<aryObj.length; i++) {
				if(aryObj[i].tagName == 'A') {
					var objA = aryObj[i];
					var strNowUrl = location.href;
					var strCheckUrl = objA.href;
					if(strNowUrl == strCheckUrl) {
						if(aryObj[i+1].tagName == 'IMG') {
							var objIMG = aryObj[i+1];
							if(objIMG.className == "over") {
								if(objIMG.src.indexOf("_cr") == -1) {
									objIMG.src = objIMG.src.replace(/(\.gif|\.jpg|\.png)/, "_cr$1");
								}
							}
						}
					}
				}
			}
		}
	} else {
		var aryObj = document.getElementsByTagName('*');
		for(i=0; i<aryObj.length; i++) {
			if(aryObj[i].tagName == 'A') {
				var objA = aryObj[i];
				var strNowUrl = location.href;
				var strCheckUrl = objA.href;
				if(strNowUrl == strCheckUrl) {
					if(aryObj[i+1].tagName == 'IMG') {
						var objIMG = aryObj[i+1];
						if(objIMG.className == 'over') {
							if(objIMG.src.indexOf("_cr") == -1) {
								objIMG.src = objIMG.src.replace(/(\.gif|\.jpg|\.png)/, "_cr$1");
							}
						}
					}
				}
			}
		}
	}
}
function initRollovers() {
	if(!document.getElementById) {
		changeNowOrver();
		return;
	}

	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {
		if (aImages[i].className == 'over') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_o'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);

			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;

			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}

			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
	changeNowOrver();
}

window.onload = initRollovers;