function setcheckout()
{

	var nights, cid, cim, ciy, cod, com, coy;
	
	cid=document.getElementById("d1d").value;
	cim=document.getElementById("d1m").value;
	ciy=document.getElementById("d1y").value;		
		
	var mktimeci=new Date();
	var mktimeco=new Date();	
	
	mktimeci.setFullYear(ciy,cim-1,cid) ;
	mktimeco.setFullYear(ciy,cim-1,cid) ;
	
	nights=document.getElementById("nights").value;
	
		if (!nights)
		{	
		mktimeco.setDate(mktimeco.getDate());
		} 
		else
		{			
		var gun_sayisi = mktimeco.getDate();
		var toplam_gun = gun_sayisi + parseInt(nights);
		mktimeco.setDate(toplam_gun);
	    }
	
	cod=mktimeco.getDate();
	com=mktimeco.getMonth()+1;
	coy=mktimeco.getFullYear();
		
	var mnths=new Array()
	mnths[0]="Jan"
	mnths[1]="Feb"
	mnths[2]="Mar"
	mnths[3]="Apr"
	mnths[4]="May"
	mnths[5]="Jun"
	mnths[6]="Jul"
	mnths[7]="Aug"
	mnths[8]="Sep"
	mnths[9]="Oct"
	mnths[10]="Nov"
	mnths[11]="Dec"
	
	document.getElementById("d2d").value=cod;
	document.getElementById("d2mm").value=mnths[com-1];
	document.getElementById("d2m").value=com;
	document.getElementById("d2y").value=coy;

}