function fillcall_day(){ 
 // this function is used to fill the call_day list on load
addOption(document.drop_list.call_day, "Monday", "Monday", "");
addOption(document.drop_list.call_day, "Tuesday", "Tuesday", "");
addOption(document.drop_list.call_day, "Wednesday", "Wednesday", "");
addOption(document.drop_list.call_day, "Thursday", "Thursday", "");
addOption(document.drop_list.call_day, "Friday", "Friday", "");
addOption(document.drop_list.call_day, "Saturday", "Saturday", "");
}

function Selectcall_time(){
// ON selection of call_day this function will work

removeAllOptions(document.drop_list.call_time);
addOption(document.drop_list.call_time, "", "AM or PM", "");

if(document.drop_list.call_day.value == 'Monday'){
addOption(document.drop_list.call_time,"9 - 11 AM", "9 - 11 AM");
addOption(document.drop_list.call_time,"11 - 1 AM", "11 - 1 AM");
addOption(document.drop_list.call_time,"1 - 3 PM", "1 - 3 PM");
addOption(document.drop_list.call_time,"3 - 5 PM", "3 - 5 PM");
addOption(document.drop_list.call_time,"5- 7 PM", "5- 7 PM");
addOption(document.drop_list.call_time,"7 - 8:30 PM", "7 - 8:30 PM");
}
if(document.drop_list.call_day.value == 'Tuesday'){
addOption(document.drop_list.call_time,"9 - 11 AM", "9 - 11 AM");
addOption(document.drop_list.call_time,"11 - 1 AM", "11 - 1 AM");
addOption(document.drop_list.call_time,"1 - 3 PM", "1 - 3 PM");
addOption(document.drop_list.call_time,"3 - 5 PM", "3 - 5 PM");
addOption(document.drop_list.call_time,"5- 7 PM", "5- 7 PM");
addOption(document.drop_list.call_time,"7 - 8:30 PM", "7 - 8:30 PM");
}
if(document.drop_list.call_day.value == 'Wednesday'){
addOption(document.drop_list.call_time,"9 - 11 AM", "9 - 11 AM");
addOption(document.drop_list.call_time,"11 - 1 AM", "11 - 1 AM");
addOption(document.drop_list.call_time,"1 - 3 PM", "1 - 3 PM");
addOption(document.drop_list.call_time,"3 - 5 PM", "3 - 5 PM");
addOption(document.drop_list.call_time,"5- 7 PM", "5- 7 PM");
addOption(document.drop_list.call_time,"7 - 8:30 PM", "7 - 8:30 PM");
}
if(document.drop_list.call_day.value == 'Thursday'){
addOption(document.drop_list.call_time,"9 - 11 AM", "9 - 11 AM");
addOption(document.drop_list.call_time,"11 - 1 AM", "11 - 1 AM");
addOption(document.drop_list.call_time,"1 - 3 PM", "1 - 3 PM");
addOption(document.drop_list.call_time,"3 - 5 PM", "3 - 5 PM");
addOption(document.drop_list.call_time,"5- 7 PM", "5- 7 PM");
addOption(document.drop_list.call_time,"7 - 8:30 PM", "7 - 8:30 PM");
}
if(document.drop_list.call_day.value == 'Friday'){
addOption(document.drop_list.call_time,"9 - 11 AM", "9 - 11 AM");
addOption(document.drop_list.call_time,"11 - 1 AM", "11 - 1 AM");
addOption(document.drop_list.call_time,"1 - 3 PM", "1 - 3 PM");
addOption(document.drop_list.call_time,"3 - 5 PM", "3 - 5 PM");
addOption(document.drop_list.call_time,"5- 7 PM", "5- 7 PM");
addOption(document.drop_list.call_time,"7 - 8:30 PM", "7 - 8:30 PM");
}
if(document.drop_list.call_day.value == 'Saturday'){
addOption(document.drop_list.call_time,"10 - 12 AM", "10 - 12 AM");
addOption(document.drop_list.call_time,"12 - 2 AM", "12 - 2 AM");
addOption(document.drop_list.call_time,"2 - 4 PM", "2 - 4 PM");
addOption(document.drop_list.call_time,"4 - 5 PM", "4 - 5 PM");
}
}
////////////////// 

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);
}