function JumpPage( url, width, height) 
{
xposition=0; yposition=0;
if ((parseInt(navigator.appVersion) >= 4 ))
{
xposition = (screen.width - width) / 2;
yposition = (screen.height - height) / 2;
}
theproperty= "width=" + width + "," 
+ "height=" + height + "," 
+ "location=0," 
+ "menubar=0,"
+ "resizable=0,"
+ "scrollbars=1,"
+ "status=0," 
+ "titlebar=0,"
+ "toolbar=0,"
+ "hotkeys=0,"
+ "screenx=" + xposition + "," //仅适用于Netscape
+ "screeny=" + yposition + "," //仅适用于Netscape
+ "left=" + xposition + "," //IE
+ "top=" + yposition; //IE 
window.open( url,'',theproperty );
}

function doZoom(size){
	var artibody = document.getElementById('artibody');
	if(!artibody){
		return;
	}
	var artibodyChild = artibody.childNodes;
	artibody.style.fontSize = size + 'px';
	//再对artibody div内的直接html节点设置fontSize属性
	for(var i = 0; i < artibodyChild.length; i++){
		if(artibodyChild[i].nodeType == 1){
			artibodyChild[i].style.fontSize = size + 'px';
		}
	}		
}