function change1(e)
{ 
    if (!e) var a = window.event.srcElement;
    else var a = e.target;
    while (a.nodeType != 1)
    {
        a = a.parentNode;
    }
    if (a.tagName == 'IMG')
    {

		var aNameArr = new Array(); 
		aNameArr=a.src.split(/\//);
    	var aImg=aNameArr[aNameArr.length-1];
		if (imgArr[aImg]) {
			a.src=a.src.substring(0, a.src.length-4) + '_act'+ a.src.substring(a.src.length-4, a.src.length);
		}
	}
}

function change2(e) {

    if (!e) var a = window.event.srcElement;
    else var a = e.target;
    while (a.nodeType != 1)
    {
	a = a.parentNode;
    }
						
    if (a.tagName=='IMG') {
		var aNameArr = new Array(); 
		aNameArr=a.src.split(/\//);
		var aImg=aNameArr[aNameArr.length-1].replace(/_act\./g,'.');
    	if (imgArr[aImg]) {
    		    a.src=a.src.substring(0, a.src.length-8) + a.src.substring(a.src.length-4, a.src.length);
		}
	}
}

document.onmouseover=change1;
document.onmouseout=change2;

//-----------------------