/*-------------------------------------------------------------
▼ロールオーバー
-------------------------------------------------------------*/


function initRollovers() {
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'imgover') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_on'+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('_on'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}


/*-------------------------------------------------------------
▼スワップ
-------------------------------------------------------------*/

function SwapImg(PL,TO) {
	if (!document.getElementById(PL)) return
	
	/*▼変数*/
	var Photolist = document.getElementById(PL);
	var Target = document.getElementById(TO);
	var TargetObj = Target.getElementsByTagName('img')[0];
	var setsrc = TargetObj.getAttribute('src');
	var aImages = Photolist.getElementsByTagName('img');
	var siPreLoad = new Array();
	var siTempSrc;
	
	if(aImages){
		for (var i = 0; i < aImages.length; i++) {
				
				/*▼プリロード*/
				var src = aImages[i].getAttribute('src');
				var ftype = src.substring(src.lastIndexOf('.'), src.length);
				var hsrc = src.replace(ftype, '_b'+ftype);
				
				siPreLoad[i] = new Image();
				siPreLoad[i].src = hsrc;
				
				/*▼マウスオーバー*/
				aImages[i].onclick = function() {
					src = this.getAttribute('src');
					ftype = src.substring(src.lastIndexOf('.'), src.length);
					hsrc = src.replace(ftype, '_b'+ftype);
					TargetObj.setAttribute('src', hsrc);
				}

		}
	}	
}

window.onload = function(){
	    initRollovers();
		SwapImg("thumbnail","dataPhoto");	
}