function checkChinese(){
	var re = /[\u4E00-\u9FA0]+/;   
    if(re.test(document.getElementById('m_name').value)){
		alert("用户名不允许输入中文!");
		return false;   
    }   
} 
function  checkMail(str){   
	var strReg="";                   
	var r;   
	var strText=str;   
	strReg=/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/i;
	r=strText.search(strReg);   
	if(r==-1){  
		return false;  
		alert("false");
	}else{ 
		return true;
		alert("true");
	}
}
/*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;
   }
  }
 }
}