var maxHeightFix=400;
var maxWidthFix=400;

//setting fix size
function setImageSize(id1)
{  
   //var imageArr=document.getElementById("achome");
   var imageArr=document.getElementById(id1);
    var imageRate = imageArr.offsetWidth / imageArr.offsetHeight;    
    
    if(imageArr.offsetWidth > maxWidthFix)
    {
        imageArr.style.width=maxWidthFix + "px";
        imageArr.style.Height=maxWidthFix / imageRate + "px";
    }
    
    if(imageArr.offsetHeight > maxHeightFix)
    {
        imageArr.style.width = maxHeightFix * imageRate + "px";
        imageArr.style.Height = maxHeightFix + "px";
    }   
}
//setting self size
function setImageSizeSelf(id1,maxWidth,maxHeight)
{  
   //var imageArr=document.getElementById("achome");
   var imageArr=document.getElementById(id1);
    var imageRate = imageArr.offsetWidth / imageArr.offsetHeight;    
    
    if(imageArr.offsetWidth > maxWidth)
    {
        imageArr.style.width=maxWidth + "px";
        imageArr.style.Height=maxWidth / imageRate + "px";
    }
    
    if(imageArr.offsetHeight > maxHeight)
    {
        imageArr.style.width = maxHeight * imageRate + "px";
        imageArr.style.Height = maxHeight + "px";
    }   
}

function checkInput(form1)
{
   if(validateText(form1.accounts,'登录名不为空')==true)
   {
     
     return false;
   }
   if(validateText(form1.password,'密码不为空')==true)
   {
     return false;
   }
   return true;
  }
//搜索产品时输入
function checkSearchInput(form1)
{  
   
   if(form1.productName.value==""&&form1.categoryId.options[0].selected==true)
   { 
     alert('产品名称和类别必须选择一个');
     return false;
   }
  
   return true;
}