//另開視窗
//windowopen(視窗名稱,連結網址,視窗寬度,視窗高度,是否有捲軸(0 or 1))
var windowstatus=0;
function windowopen(name,txt,w,h,s) {
	if (windowstatus>0) {
		windowobject.close();
	}
   	windowobject=window.open(txt,name,"scrollbars="+s+",width="+w+",height="+h+",resizable=1,toolbar=0,location=0,directories=0,status=0,menubar=0,titlebar=0,channelmode=0,fullscreen=0,left=0,top=0");
	windowstatus=1;
}

//檢查表單欄位是否空白
//chkField(輸入格名稱)
function chkField(txt){
	var i=0;
	var t="",kind="";
	for(i=0;i<document.w.elements.length;i++) {
  		if (document.w.elements[i].name == txt) {
  			switch(document.w.elements[i].type){
				case "text":			kind="a";break;
				case "password":		kind="a";break;
				case "textarea":		kind="a";break;
				case "hidden":			kind="a";break;
				case "radio":			kind="b";break;
				case "checkbox":		kind="b";break;
				case "select-one":		kind="c";break;
				case "select-multiple":	kind="c";break;
				case "file":			kind="a";break;
			}
  			switch(kind){
  				case "a":
  					t = document.w.elements[i].value;
  					break;
		   		case "b":
		   			if (document.w.elements[i].checked){
		  				t = document.w.elements[i].value;
		   			}
		   			break;
		   		case "c":
		   			if (document.w.elements[i].selectedIndex > 0){
			   			if (document.w.elements[i].options[document.w.elements[i].selectedIndex].selected){
			   				t = document.w.elements[i].options[document.w.elements[i].selectedIndex].value;
			   			}
			   		}
		   			break;
		   	}
  		}
 	}
 	if (t.length > 0) {
 		i=0;
 		while(i<t.length){
			if (t.substring(i,i+1) != ' ') {
		      return true;
			}
			i++;
		}
	}
 	return false;
}