function change_sel(cn, cd)
{
       var country = cn.value;

		if(country == "")
		{
			cd.length=1;
			
			cd.options[0].text= "SELECT PORT";
			cd.options[0].value= "";
			cd.options[0].selected = true
		}
		
		
		if (country == "KR")
		{
		    cd.length = 3;
		     if(cd.length!=0){
				
			cd.options[0].text= "BUSAN (KBS)";
			cd.options[0].value= "KBS";
			cd.options[0].selected = true

			cd.options[1].text= "ULSAN (KUL)";
			cd.options[1].value= "KUL";
			cd.options[0].selected = true

			cd.options[2].text= "INCHEON (KIN)";
			cd.options[2].value= "KIN";
			cd.options[0].selected = true

				
			}
		}
		
		
		
		if (country == "CN")
		{
		    cd.length = 5;
		     if(cd.length!=0){
				
			cd.options[0].text= "SHANGHAI (CSH)";
			cd.options[0].value= "CSH";
			cd.options[0].selected = true

			cd.options[1].text= "XINGANG (CXG)";
			cd.options[1].value= "CXG";
			cd.options[0].selected = true

			cd.options[2].text= "NINGBO (CNB)";
			cd.options[2].value= "CNB";
			cd.options[0].selected = true
			
			cd.options[3].text= "DALIAN (CDL)";
			cd.options[3].value= "CDL";
			cd.options[0].selected = true
			
			cd.options[4].text= "QINGDAO (CQD)";
			cd.options[4].value= "CQD";
			cd.options[0].selected = true
				
			}
		}
		
		if (country == "JP")
		{
		    cd.length = 11;
		     if(cd.length!=0){
				
			cd.options[0].text= "TOKYO (JTK)";
			cd.options[0].value= "JTK";
			cd.options[0].selected = true

			cd.options[1].text= "YOKOHAMA (JYH)";
			cd.options[1].value= "JYH";
			cd.options[0].selected = true

			cd.options[2].text= "NAGOYA (JNG)";
			cd.options[2].value= "JNG";
			cd.options[0].selected = true
			
			cd.options[3].text= "KOBE (JKB)";
			cd.options[3].value= "JKB";
			cd.options[0].selected = true
			
			cd.options[4].text= "OSAKA (JOS)";
			cd.options[4].value= "JOS";
			cd.options[0].selected = true

			cd.options[5].text= "SHIMIZU (JSZ)";
			cd.options[5].value= "JSZ";
			cd.options[0].selected = true
			
			cd.options[6].text= "TOKUYAMA (JTY)";
			cd.options[6].value= "JTY";
			cd.options[0].selected = true
						
			cd.options[7].text= "MOJI (JMJ)";
			cd.options[7].value= "JMJ";
			cd.options[0].selected = true
			
			cd.options[8].text= "HAKATA (JHT)";
			cd.options[8].value= "JHT";
			cd.options[0].selected = true
						
			cd.options[9].text= "KURE (JKR)";
			cd.options[9].value= "JKR";
			cd.options[0].selected = true

			cd.options[10].text= "IYOMISHIMA (JIY)";
			cd.options[10].value= "JIY";
			cd.options[0].selected = true
			}
		}
		
		
		return true;
}

function change_sel2(cn, cd,cd_val)
{
		 var cn2 = document.getElementById(cn); 
		 var country = cn2.options[cn2.selectedIndex].value;	
		 var cd = document.getElementById(cd); 
		 var cd_val = cd_val;

		if(country == "")
		{
			cd.length=1;
			
			cd.options[0].text= "SELECT PORT";
			cd.options[0].value= "";
			cd.options[0].selected = true
		}
		
		
		if (country == "KR")
		{
		    cd.length = 3;
		     if(cd.length!=0){
					
				cd.options[0].text= "BUSAN (KBS)";
				cd.options[0].value= "KBS";
				if(cd_val =="KBS"){
				cd.options[0].selected = true
				}
				cd.options[1].text= "ULSAN (KUL)";
				cd.options[1].value= "KUL";
				if(cd_val =="KUL"){
				cd.options[1].selected = true
				}
				cd.options[2].text= "INCHEON (KIN)";
				cd.options[2].value= "KIN";
				if(cd_val =="KIN"){
				cd.options[2].selected = true
				}
				
			}
		}
		
		
		
		if (country == "CN")
		{
		    cd.length = 5;
		     if(cd.length!=0){
					
				cd.options[0].text= "SHANGHAI (CSH)";
				cd.options[0].value= "CSH";
				if(cd_val =="CSH"){
				cd.options[0].selected = true
				}
				cd.options[1].text= "XINGANG (CXG)";
				cd.options[1].value= "CXG";
				if(cd_val =="CXG"){
				cd.options[1].selected = true
				}
				cd.options[2].text= "NINGBO (CNB)";
				cd.options[2].value= "CNB";
				if(cd_val =="CNB"){
				cd.options[2].selected = true
				}
				cd.options[3].text= "DALIAN (CDL)";
				cd.options[3].value= "CDL";
				if(cd_val =="CDL"){
				cd.options[3].selected = true
				}			
				cd.options[4].text= "QINGDAO (CQD)";
				cd.options[4].value= "CQD";
				if(cd_val =="CQD"){
				cd.options[4].selected = true
				}
				
			}
		}
		
		if (country == "JP")
		{
		    cd.length = 10;
		     if(cd.length!=0){
				
			cd.options[0].text= "TOKYO (JTK)";
			cd.options[0].value= "JTK";
			if(cd_val =="JTK"){
			cd.options[0].selected = true
			}
			cd.options[1].text= "YOKOHAMA (JYH)";
			cd.options[1].value= "JYH";
			if(cd_val =="JYH"){
			cd.options[1].selected = true
			}
			cd.options[2].text= "NAGOYA (JNG)";
			cd.options[2].value= "JNG";
			if(cd_val =="JNG"){
			cd.options[2].selected = true
			}
			
			cd.options[3].text= "KOBE (JKB)";
			cd.options[3].value= "JKB";
			if(cd_val =="JKB"){
			cd.options[3].selected = true
			}
			
			cd.options[4].text= "OSAK (JOS)";
			cd.options[4].value= "JOS";
			if(cd_val =="JOS"){
			cd.options[4].selected = true
			}
			
			cd.options[5].text= "SHIMIZU (JSZ)";
			cd.options[5].value= "JSZ";
			if(cd_val =="JSZ"){
			cd.options[5].selected = true
			}
			
			cd.options[6].text= "TOKUYAMA (JTY)";
			cd.options[6].value= "JTY";
			if(cd_val =="JTY"){
			cd.options[6].selected = true
			}
			
			
			cd.options[7].text= "MOJI (JMJ)";
			cd.options[7].value= "JMJ";
			if(cd_val =="JMJ"){
			cd.options[7].selected = true
			}
			
			cd.options[8].text= "HAKATA (JHT)";
			cd.options[8].value= "JHT";
			if(cd_val =="JHT"){
			cd.options[8].selected = true
			}
			
			
			cd.options[9].text= "KURE (JKR)";
			cd.options[9].value= "JKR";
			if(cd_val =="JKR"){
			cd.options[9].selected = true
			}

			cd.options[10].text= "IYOMISHIMA (JIY)";
			cd.options[10].value= "JIY";
			if(cd_val =="JIY"){
			cd.options[10].selected = true
			}

			}
		}
		
		
		return true;
}