// JavaScript Document
var flag=false;
function DrawImage(ImgD,width,height){
	var image=new Image();
	var iwidth = width; //定义允许图片宽度，当宽度大于这个值时等比例缩小
	var iheight = height; //定义允许图片高度，当宽度大于这个值时等比例缩小
	image.src=ImgD.src;
	if(image.width>0 && image.height>0){
	flag=true;
	if(image.width/image.height>= iwidth/iheight){
	if(image.width>iwidth){
	ImgD.width=iwidth;
	ImgD.height=(image.height*iwidth)/image.width;
	}else{
	ImgD.width=image.width; 
	ImgD.height=image.height;
	}
	}
	else{
	if(image.height>iheight){ 
	ImgD.height=iheight;
	ImgD.width=(image.width*iheight)/image.height; 
	}else{
	ImgD.width=image.width; 
	ImgD.height=image.height;
	}
	}
	}
	ImgD.style.display="block";
}

/*****************************************************************
* 功能：收藏本页
******************************************************************/
function add_favorite(){
	var title = document.title;
	var url = document.URL;
	if (document.all) {
		window.external.AddFavorite(url,title);
	} else if (window.sidebar) {
		window.sidebar.addPanel(title,url,"");
	}
}

/*****************************************************************
* 功能：设为首页
******************************************************************/
function set_first(obj, url){
    obj.style.behavior='url(#default#homepage)';
    obj.setHomePage(url);
}