function fillCategory(){ 
 // this function is used to fill the category list on load
addOption(document.drop_list.dimensions, "12'7" to 13'6"|74|13", "Length 12'7\" to 13'6\"; Max Width 74\"", "");
addOption(document.drop_list.dimensions, "13'7" to 14'6"|74|14", "Length 13'7\" to 14'6\"; Max Width 74\"", "");
addOption(document.drop_list.dimensions, "14'7" to 15'6"|80|15", "Length 14'7\" to 15'6\"; Max Width 80\"", "");
addOption(document.drop_list.dimensions, "15'7" to 16'6"|86|16", "Length 15'7\" to 16'6\"; Max Width 86\"", "");
addOption(document.drop_list.dimensions, "16'7" to 17'6"|90|17", "Length 16'7\" to 17'6\"; Max Width 90\"", "");
addOption(document.drop_list.dimensions, "17'7" to 18'6"|96|18", "Length 17'7\" to 18'6\"; Max Width 96\"", "");
addOption(document.drop_list.dimensions, "18'7" to 19'6"|96|19", "Length 18'7\" to 19'6\"; Max Width 96\"", "");
addOption(document.drop_list.dimensions, "19'7" to 20'6"|102|20", "Length 19'7\" to 20'6\"; Max Width 102\"", "");
addOption(document.drop_list.dimensions, "20'7" to 21'6"|102|21", "Length 20'7\" to 21'6\"; Max Width 102\"", "");
addOption(document.drop_list.dimensions, "21'7" to 22'6"|102|22", "Length 21'7\" to 22'6\"; Max Width 102\"", "");
addOption(document.drop_list.dimensions, "22'7" to 23'6"|102|23", "Length 22'7\" to 23'6\"; Max Width 102\"", "");
addOption(document.drop_list.dimensions, "23'7" to 24'6"|102|24", "Length 23'7\" to 24'6\"; Max Width 102\"", "");
addOption(document.drop_list.dimensions, "24'7" to 25'6"|102|25", "Length 24'7\" to 25'6\"; Max Width 102\"", "");
addOption(document.drop_list.dimensions, "25'7" to 26'6"|102|26", "Length 25'7\" to 26'6\"; Max Width 102\"", "");
addOption(document.drop_list.dimensions, "26'7" to 27'6"|102|27", "Length 26'7\" to 27'6\"; Max Width 102\"", "");
addOption(document.drop_list.dimensions, "27'7" to 28'6"|102|28", "Length 27'7\" to 28'6\"; Max Width 102\"", "");
}



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

var dim = document.drop_list.dimensions.value;
var dim_array = dim.split("|");

removeAllOptions(document.drop_list.motornum);
addOption(document.drop_list.motornum, "0", "Select You Boat's Method Of Propulsion", "");

if(dim_array[2] < 14){
addOption(document.drop_list.motornum, "Outboard (O/B)|770", "Outboard (O/B)");
}
if(dim_array[2] >= 14 && dim_array[2] <= 26){
addOption(document.drop_list.motornum, "Outboard (O/B)|770", "Outboard (O/B)");
addOption(document.drop_list.motornum, "Inboard/Outboard (I/O) or Stern Drive|771", "Inboard/Outboard (I/O) or Stern Drive");
addOption(document.drop_list.motornum, "Jet Drive|771", "Jet Drive");
}
if(dim_array[2	] > 26){
addOption(document.drop_list.motornum, "Inboard/Outboard (I/O) or Stern Drive|771", "Inboard/Outboard (I/O) or Stern Drive");
addOption(document.drop_list.motornum, "Jet Drive|771", "Jet Drive");
}

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

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);
}