function ChangePreview(image) {


document.getElementById('pre_image').src = image;

}


function ClearValue(id) {
document.getElementById(id).value ="" ;

}

function initImage() {
	

		imageId = 'pre_image';
		obj = document.getElementById(imageId);
		setOpacity(imageId, 0);
		obj.style.visibility = "visible";
		fadeIn(imageId);
	
}
delay = 1;
function fadeIn(objId) {
	opacity = 1;
	if (document.getElementById) {
		while (opacity <= 100) {
			window.setTimeout("setOpacity('"+objId+"',"+opacity+")", delay);
			opacity += 2;
			delay += 3; // set image fade delay
		}
	}
}

function setOpacity(objId, opacity) {
	if (document.getElementById) {
		obj = document.getElementById(objId);
		opacity = (opacity == 100)?99.999:opacity;
		// IE/Win
		obj.style.filter = "alpha(opacity:"+opacity+")";
		// Safari<1.2, Konqueror
		obj.style.KHTMLOpacity = opacity/100;
		// Older Mozilla and Firefox
		obj.style.MozOpacity = opacity/100;
		// Safari 1.2, newer Firefox and Mozilla, CSS3
		obj.style.opacity = opacity/100;
	}
}