try { // IE only
    document.execCommand('BackgroundImageCache', false, true);
} catch(e) { }

// roll-over
var currentImg;
function ImgOn(imgEl){
	var name = imgEl.src;
	if( name.indexOf("_on.gif") <= 0 ) {
		imgEl.src = name.replace(".gif", "_on.gif");
	} else {
		currentImg = imgEl;
	}
}

function ImgOut(imgEl){
	if( currentImg != imgEl ) {
		imgEl.src = imgEl.src.replace("_on.gif", ".gif");
	}
}

var ccurrentImg;
function ImgOn2(imgEl){
	var name = imgEl.src;
	if( name.indexOf("_on.png") <= 0 ) {
		imgEl.src = name.replace(".png", "_on.png");
	} else {
		ccurrentImg = imgEl;
	}
}
function ImgOut2(imgEl){
	if( ccurrentImg != imgEl ) {
		imgEl.src = imgEl.src.replace("_on.png", ".png");
	}
}


/*Show, Hide*/
function Div_Show(str){
	document.getElementById(str).style.display = "block";
}
function Div_Hide(str){
	document.getElementById(str).style.display = "none";
}

function viewDiv(viewDiv) {
	var divObj = document.getElementById(viewDiv);
	if(divObj.style.display == 'none')
	divObj.style.display = 'block';
	else
	divObj.style.display = 'none';
}