function openwindow(url){
 newWindow = window.open(url,"NewWindow","toolbar=no,width=620,height=485,directories=no,status=no,scrollbars=yes,resize=no,menubar=no")    
 newWindow.focus();
}
function GetCookieVal(offset)
//获得Cookie解码后的值
{
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}
function SetCookie(name, value)
//设定Cookie值
{
var expdate = new Date();
var argv = SetCookie.arguments;
var argc = SetCookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
var path = (argc > 3) ? argv[3] : null;
var domain = (argc > 4) ? argv[4] : null;
var secure = (argc > 5) ? argv[5] : false;
if(expires!=null) expdate.setTime(expdate.getTime() + ( expires * 1000 ));
document.cookie = name + "=" + escape (value) +((expires == null) ? "" : ("; expires="+ expdate.toGMTString()))
+((path == null) ? "" : ("; path=" + path)) +((domain == null) ? "" : ("; domain=" + domain))
+((secure == true) ? "; secure" : "");
}
function DelCookie(name)
//删除Cookie
{
var exp = new Date();
exp.setTime (exp.getTime() - 1);
var cval = GetCookie (name);
document.cookie = name + "=" + cval + "; expires="+ exp.toGMTString();
}
function GetCookie(name)
//获得Cookie的原始值
{
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen)
{
var j = i + alen;
if (document.cookie.substring(i, j) == arg)
return GetCookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) break;
}
return null;
}

//-----------------------------------------------------------------------------------------------------------------		
function productadd(productid) { 
if(productid.checked) {
Form1.productlist.value += productid.value + ",";}
else {
Form1.productlist.value = Form1.productlist.value.replace(productid.value + ",",""); }
//document.all("textbox1").value = Form1.productlist.value;
SetCookie("pcookie", Form1.productlist.value);
}
//-----------------------------------------------------------------------------------------------------------------
function productdel() { 
DelCookie("pcookie");
window.close();
}
//-----------------------------------------------------------------------------------------------------------------
function changeImg(obj,width,height) {
        if ( obj.width > width || obj.height > height ) 
        {
            var scale;
            var scale1 = obj.width / width;
            var scale2 = obj.height / height;
            if(scale1 > scale2){
                scale = scale1;
         }
         else
         {
           scale = scale2;
         }
            obj.width = obj.width / scale;
            //  obj.height = obj.height / scale;
        }
    }