//登陆口的JS
function focusDeal(id){
		var obj,objDisplay;
		obj = document.getElementById(id);
		objDisplay = document.getElementById(id+"_display");
		if(!obj || !objDisplay)return false;
//		if(objDisplay.value==objDisplay.defaultValue){需要考虑是否中间插入内容,所以干脆重新输入
			obj.value = objDisplay.value = "";
//		}
	}
	function blurDeal(id){
		var obj,objDisplay;
		obj = document.getElementById(id);
		objDisplay = document.getElementById(id+"_display");
		if(!obj || !objDisplay)return false;

		if(objDisplay.value==""){
			obj.value = "";
			objDisplay.value = objDisplay.defaultValue;
		}
	}
	function keyDownDeal(id){
		if(!event)return false;
		var obj,objDisplay;
		obj = document.getElementById(id);
		objDisplay = document.getElementById(id+"_display");
		if(!obj || !objDisplay)return false;
		
		switch(event.keyCode){
			case 8 : //backspace
				obj.value=objDisplay.value="";
			case 17 : //CTRL ,16:shift,37:left,38:top,39:right,40:down;
			case 45 : return false;
			case 46 : //delete
				obj.value=objDisplay.value="";
				return false;

			default : 
				if(event.ctrlKey)return false;
				return true;
		}

	}
	function keyPressDeal(id){
		if(!event)return false;
		var obj,objDisplay;
		obj = document.getElementById(id);
		objDisplay = document.getElementById(id+"_display");
		if(!obj || !objDisplay)return false;
		
		obj.value += String.fromCharCode(event.keyCode);
		objDisplay.value += "●";
		return false;
	}
	function moveEnd(range,length){
		range.moveStart("character",length);
		range.collapse();
		range.select();
	}