function OpenUrl(Url,Width,Height,scrollbars){
 window.open(""+Url,"","Width="+Width+",Height="+Height+",top=100,left=100,status=no,scrollbars="+scrollbars)
}
function GP(n){
 var dight = n/10;
 var l = dight.toString().length - (dight.toString().indexOf('.') + 1);
 for(var i=l;i>=0;i--)
	dight = new Number(dight.toFixed(i));
 return dight*10; 
} 
function showTable(sel){
 var val = sel.value;
 form1.Istrue.value = val;
 if(val == 0){
	document.getElementById("BackDate").style.display = "none";
	document.getElementById("sMultiCity").style.display = "none";
	document.getElementById("eMultiCity").style.display = "none";
	document.getElementById("MultiDate").style.display = "none";
	form1.Scity.onchange = function(){javascript:subcity(this.value);}
	form1.Ecity.onchange = function(){javascript:Endcity(this.value);}
	form1.Scity.value="SHA";
	form1.Ecity.value="PEK";
	ACN(form1.StartCity,"SHA");
	ACN(form1.EndCity,"PEK");
	ST(form1.StartTime);	
	AWN(form1.AirLine);}
 else if(val == 1){
	document.getElementById("BackDate").style.display = "block";
	document.getElementById("sMultiCity").style.display = "none";
	document.getElementById("eMultiCity").style.display = "none";
	document.getElementById("MultiDate").style.display = "none";
	form1.Scity.onchange = function(){javascript:subcity(this.value);}
	form1.Ecity.onchange = function(){javascript:Endcity(this.value);}
	form1.Scity.value="SHA";
	form1.Ecity.value="PEK";
	ACN(form1.StartCity,"SHA");
	ACN(form1.EndCity,"PEK");
	ST(form1.StartTime);	
	ST(form1.BackTime);	
	AWN(form1.AirLine);}
 else if(val == 2){
	document.getElementById("BackDate").style.display = "none";
	document.getElementById("sMultiCity").style.display = "block";
	document.getElementById("eMultiCity").style.display = "block";
	document.getElementById("MultiDate").style.display = "block";
	form1.Scity.onchange = function(){javascript:subcity(this.value);}
	form1.Ecity.onchange = function(){javascript:Endcity(this.value);}
	form1.Scity.value="SHA";
	form1.Ecity.value="PEK";
	ACN(form1.StartCity,"SHA");
	ACN(form1.EndCity,"PEK");
	ACN(form1.StartCity2,"PEK");
	ACN(form1.EndCity2,"CAN");
	ST(form1.StartTime);	
	ST(form1.StartTime2);	
	AWN(form1.AirLine);}
 else{
	document.getElementById("BackDate").style.display = "none";
	document.getElementById("sMultiCity").style.display = "none";
	document.getElementById("eMultiCity").style.display = "none";
	document.getElementById("MultiDate").style.display = "none";
	AII(form1.StartCity,"PVG");
	form1.Scity.onchange = function(){javascript:Sgcity(this.value);}
	form1.Ecity.onchange = function(){javascript:Egcity(this.value);}
	
	form1.Scity.value="PVG";
	form1.Ecity.value="AAL";
	ACI(form1.EndCity,"AAL");
	ST(form1.StartTime);	
	AWI(form1.AirLine);
	//alert(form1.Ecity.onchange.value);
	}
}
function CheckDate(s){
 var Today = new Date();
 var y,m,d,t;
 y = Today.getFullYear();
 m = Today.getMonth() + 1;
 if(m<10) m = "0"+m;
 d = Today.getDate();
 if(d<10) d = "0"+d;
 t = y + "-" + m + "-" + d;
 return (t>s);
}
function Check(){
with(form1){
 var sel = Istrue.value;
 if(sel == 3){}
 else{
	if(EndCity.value == StartCity.value){
		alert("出发城市与到达城市不能相同！");
		EndCity.focus();
		return false;}
	if(CheckDate(StartDate.value)){
		alert("出发日期不能小于当前日期！");
		StartDate.focus();
		return false;}
	if(sel == 1){
		if(CheckDate(BackDate.value)){
			alert("回程日期不能小于当前日期！");
			BackDate.focus();
			return false;}
		if(BackDate.value < StartDate.value){
			alert("回程日期不能小于出发日期！");
			BackDate.focus();
			return false;}}
	if(sel == 2){
		if(EndCity2.value == StartCity2.value){
			alert("出发城市与到达城市不能相同！");
			EndCity2.focus();
			return false;}
		if(CheckDate(StartDate2.value)){
			alert("第二出发日期不能小于当前日期！");
			StartDate2.focus();
			return false;}
		if(StartDate2.value < StartDate.value){
			alert("第二出发日期不能小于第一出发日期！");
			StartDate2.focus();
			return false;}}
	}
 }
}