function fillCategory(){ 
 // this function is used to fill the category list on load
addOption(document.drop_list.country, "US", "United States", "");
addOption(document.drop_list.country, "CA", "Canada", "");
addOption(document.drop_list.country, "MX", "Mexico", "");
}

function Selectstate(){
// ON selection of category this function will work

removeAllOptions(document.drop_list.state);
addOption(document.drop_list.state, "", "Please Choose One", "");

if(document.drop_list.country.value == 'US'){

document.drop_list.state.disabled=false;

      addOption(document.drop_list.state,"AL", "Alabama");
      addOption(document.drop_list.state,"AK", "Alaska");
      addOption(document.drop_list.state,"AZ", "Arizona");
      addOption(document.drop_list.state,"AR", "Arkansas");
      addOption(document.drop_list.state,"CA", "California");
      addOption(document.drop_list.state,"CO", "Colorado");
      addOption(document.drop_list.state,"CT", "Connecticut");
      addOption(document.drop_list.state,"DE", "Delaware");
      addOption(document.drop_list.state,"FL", "Florida");
      addOption(document.drop_list.state,"GA", "Georgia");
      addOption(document.drop_list.state,"HI", "Hawaii");
      addOption(document.drop_list.state,"ID", "Idaho");
      addOption(document.drop_list.state,"IL", "Illinois");
      addOption(document.drop_list.state,"IN", "Indiana");
      addOption(document.drop_list.state,"IA", "Iowa");
      addOption(document.drop_list.state,"KS", "Kansas");
      addOption(document.drop_list.state,"KY", "Kentucky");
      addOption(document.drop_list.state,"LA", "Louisiana");
      addOption(document.drop_list.state,"ME", "Maine");
      addOption(document.drop_list.state,"MD", "Maryland");
      addOption(document.drop_list.state,"MA", "Massachusetts");
      addOption(document.drop_list.state,"MI", "Michigan");
      addOption(document.drop_list.state,"MN", "Minnesota");
      addOption(document.drop_list.state,"MS", "Mississippi");
      addOption(document.drop_list.state,"MO", "Missouri");
      addOption(document.drop_list.state,"MT", "Montana");
      addOption(document.drop_list.state,"NE", "Nebraska");
      addOption(document.drop_list.state,"NV", "Nevada");
      addOption(document.drop_list.state,"NH", "New Hampshire");
      addOption(document.drop_list.state,"NJ", "New Jersey");
      addOption(document.drop_list.state,"NM", "New Mexico");
      addOption(document.drop_list.state,"NY", "New York");
      addOption(document.drop_list.state,"NC", "North Carolina");
      addOption(document.drop_list.state,"ND", "North Dakota");
      addOption(document.drop_list.state,"OH", "Ohio");
      addOption(document.drop_list.state,"OK", "Oklahoma");
      addOption(document.drop_list.state,"OR", "Oregon");
      addOption(document.drop_list.state,"PA", "Pennsylvania");
      addOption(document.drop_list.state,"RI", "Rhode Island");
      addOption(document.drop_list.state,"SC", "South Carolina");
      addOption(document.drop_list.state,"SD", "South Dakota");
      addOption(document.drop_list.state,"TN", "Tennessee");
      addOption(document.drop_list.state,"TX", "Texas");
      addOption(document.drop_list.state,"UT", "Utah");
      addOption(document.drop_list.state,"VT", "Vermont");
      addOption(document.drop_list.state,"VA", "Virginia");
      addOption(document.drop_list.state,"WA", "Washington");
      addOption(document.drop_list.state,"DC", "Washington, D.C.");
      addOption(document.drop_list.state,"WV", "West Virginia");
      addOption(document.drop_list.state,"WI", "Wisconsin");
      addOption(document.drop_list.state,"WY", "Wyoming");
}
if(document.drop_list.country.value == 'CA'){
	
document.drop_list.state.disabled=false;
		
      addOption(document.drop_list.state,"AB", "Alberta");
      addOption(document.drop_list.state,"BC", "British Columbia");
      addOption(document.drop_list.state,"MB", "Manitoba");
      addOption(document.drop_list.state,"NB", "New Brunswick");
      addOption(document.drop_list.state,"NF", "Newfoundland");
      addOption(document.drop_list.state,"NT", "Northwest Territories");
      addOption(document.drop_list.state,"NS", "Nova Scotia");
      addOption(document.drop_list.state,"ON", "Ontario");
      addOption(document.drop_list.state,"PE", "Prince Edward Island");
      addOption(document.drop_list.state,"PQ", "Quebec");
      addOption(document.drop_list.state,"SK", "Saskatchewan");
      addOption(document.drop_list.state,"YT", "Yukon Territory / Nunavut");


}
if(document.drop_list.country.value == 'MX'){

document.drop_list.state.disabled=true;

}

}
////////////////// 

function removeAllOptions(selectbox)
{
	var i;
	for(i=selectbox.options.length-1;i>=0;i--)
	{
		//selectbox.options.remove(i);
		selectbox.remove(i);
	}
}


function addOption(selectbox, value, text )
{
	var optn = document.createElement("OPTION");
	optn.text = text;
	optn.value = value;

	selectbox.options.add(optn);
}