function IsDigit()
  {
    return ((event.keyCode >= 48) && (event.keyCode <= 57));
  }  
  
  function check(submit){
	     for(var i=0;i<this.myform.elements.length;i++)
	         {
	            if(this.myform.elements[i].type=="text"||this.myform.elements[i].type=="password"||this.myform.elements[i].selectedIndex==0)
	                {  
	                 if(this.myform.elements[i].validate!=undefined){
	                   var  vali=this.myform.elements[i].validate.split(",");
	                      if(document.getElementById(vali[0]).value==""||document.getElementById(vali[0]).value==null){
	                          alert(vali[1]+"不能为空");document.getElementById(vali[0]).focus();
	                           return false;
	                        }
	                     }
	             }
	       }
	    if(submit!=undefined){
	        document.getElementById(submit).disabled=true;
	    }
   }  
  function check2(){
	     for(var i=0;i<this.myform.elements.length;i++)
	         {
	            if(this.myform.elements[i].type=="text"||this.myform.elements[i].type=="password"||this.myform.elements[i].selectedIndex==0)
	                {  
	                 if(this.myform.elements[i].validate!=undefined){
	                   var  vali=this.myform.elements[i].validate.split(",");
	                      if(document.getElementById(vali[0]).value==""||document.getElementById(vali[0]).value==null){
	                          alert(vali[1]+"不能为空");document.getElementById(vali[0]).focus();
	                           return false;
	                        }
	                     }
	             }
	       }
	     this.myform.submit();
}  
  
  /**
   * 判断name是否已添加过
   * 添加时用
   */