function h(obj,url){obj.style.behavior='url(#default#homepage)';obj.setHomePage(url);}
// 说明：用 JavaScript 实现网页图片等比例缩放 

function DrawImage(ImgD,FitWidth,FitHeight){
	var image=new Image();
	image.src=ImgD.src;
	if(image.width>0 && image.height>0){
		if(image.width/image.height>= FitWidth/FitHeight){
			if(image.width>FitWidth){
				ImgD.width=FitWidth;
				ImgD.height=(image.height*FitWidth)/image.width;
			}else{
					ImgD.width=image.width;
					ImgD.height=image.height;
			}
		}else{
				if(image.height>FitHeight){
					ImgD.height=FitHeight;
					ImgD.width=(image.width*FitHeight)/image.height;
				}else{
						ImgD.width=image.width;
						ImgD.height=image.height;
				}
		}
	}
}
//检测某范围内图片大小
function control_img(cid,cwidth,cheight){
var id=cid;
var arr=document.getElementById(id);
if(arr==null) return false;
var wh=cwidth;
var ct=cheight;
var arr=arr.getElementsByTagName("IMG");
for(var i=0;i<arr.length;i++){
DrawImage(arr[i],wh,ct);
}
}
//检测用户登录
function CheckUserForm()
{
	if(document.mx_UserLogin.mx_UserName.value=="")
	{
		alert("请输入用户名！");
		document.mx_UserLogin.mx_UserName.focus();
		return false;
	}
	if(document.mx_UserLogin.mx_Password.value == "")
	{
		alert("请输入密码！");
		document.mx_UserLogin.mx_Password.focus();
		return false;
	}
}