function changepage() {
  var myurl=document.formname.select.options[document.formname.select.selectedIndex].value;
  location.href=myurl; 
}

function isChr(Obj){
  if(Obj.value.length==0) {
  	alert("請輸入欲搜尋字元"); 
  	Obj.focus();
  	return false;
  }else {	  	
  var cmp="~!@#$%^&*()-_+=|\}{[]:;<>,.?/"; 
  var cmpChar;
  var n1 = new Array("0","1","2","3","4","5","6","7","8","9","0","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z")

  error=false;
  
  for (var j = 0; j < n1.length;j++) {  	
  	if((Obj.value.indexOf(n1[j]) != -1) && (Obj.value.length==1)){
  	alert("請輸入有效日字元");
  	Obj.focus();
  	return false;
  	}  	
  }
	  

  
  for(var i=0; i<Obj.value.length; i++){
     cmpChar=Obj.value.substring(i,i+1)         
     if(cmp.indexOf(cmpChar)>0){     
       error=true;
       i=Obj.value.length;
     }
  }
  if(error){
       alert("請輸入有效字元");
       Obj.focus();
       return false;}
   return true;
   }
}