/*

Author: mg12

Update: 2008/07/01

Author URI: http://www.fighton.cn/

*/



function setStyleDisplay(id, status) {

	document.getElementById(id).style.display = status;

}



function setStyleBackgroundImage(id, imageURL) {

	document.getElementById(id).style.backgroundImage = "url('imageURL')";

}



function setCookie(name, value, days) {

	if (!days) {

		days = 365;

	}

	var date = new Date();

	date.setTime(date.getTime()+(days*24*60*60*1000));

	var expires = "; expires="+date.toGMTString();

	document.cookie = name+"="+value+expires+"; path=/";

}



function goTop(acceleration, time) {



	acceleration = acceleration || 0.1;

	time = time || 16;



	var dx = 0;

	var dy = 0;

	var bx = 0;

	var by = 0;

	var wx = 0;

	var wy = 0;



	if (document.documentElement) {

		dx = document.documentElement.scrollLeft || 0;

		dy = document.documentElement.scrollTop || 0;

	}

	if (document.body) {

		bx = document.body.scrollLeft || 0;

		by = document.body.scrollTop || 0;

	}

	var wx = window.scrollX || 0;

	var wy = window.scrollY || 0;



	var x = Math.max(wx, Math.max(bx, dx));

	var y = Math.max(wy, Math.max(by, dy));



	var speed = 1 + acceleration;

	window.scrollTo(Math.floor(x / speed), Math.floor(y / speed));

	if(x > 0 || y > 0) {

		var invokeFunction = "goTop(" + acceleration + ", " + time + ")"

		window.setTimeout(invokeFunction, time);

	}

}



function switchImage(imageId, imageUrl, linkId, linkUrl, preview, title, alt) {

	if(imageId && imageUrl) {

		var image = document.getElementById(imageId);

		image.src = imageUrl;



		if(title) {

			image.title = title;

		}

		if(alt) {

			image.alt = alt;

		}

	}



	if(linkId && linkUrl) {

		var link = document.getElementById(linkId);

		link.href = linkUrl;

	}

}