function fillCategory(){ 
 // this function is used to fill the category list on load

addOption(document.drop_list.Category, '26', 'AT&T');addOption(document.drop_list.Category, '35', 'ATT');addOption(document.drop_list.Category, '31', 'Apple');addOption(document.drop_list.Category, '14', 'BlackBerry');addOption(document.drop_list.Category, '16', 'Blackberry');addOption(document.drop_list.Category, '24', 'Cingular');addOption(document.drop_list.Category, '42', 'LG');addOption(document.drop_list.Category, '29', 'Motorola');addOption(document.drop_list.Category, '34', 'Nokia');addOption(document.drop_list.Category, '23', 'Palm');addOption(document.drop_list.Category, '38', 'Pantech');addOption(document.drop_list.Category, '21', 'Samsung');} // end of JS function

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

removeAllOptions(document.drop_list.SubCat);
addOption(document.drop_list.SubCat, "", "SubCat", "");

// Collect all element of subcategory for various cat_id 

if(document.drop_list.Category.value == '14'){addOption(document.drop_list.SubCat,'14', '7100');addOption(document.drop_list.SubCat,'27', '7130C');addOption(document.drop_list.SubCat,'15', '7290');addOption(document.drop_list.SubCat,'20', '8800');addOption(document.drop_list.SubCat,'33', '8820');addOption(document.drop_list.SubCat,'19', 'Curve (8300)');addOption(document.drop_list.SubCat,'18', 'Pearl (8100)');}if(document.drop_list.Category.value == '15'){addOption(document.drop_list.SubCat,'14', '7100');addOption(document.drop_list.SubCat,'27', '7130C');addOption(document.drop_list.SubCat,'15', '7290');addOption(document.drop_list.SubCat,'20', '8800');addOption(document.drop_list.SubCat,'33', '8820');addOption(document.drop_list.SubCat,'19', 'Curve (8300)');addOption(document.drop_list.SubCat,'18', 'Pearl (8100)');}if(document.drop_list.Category.value == '16'){addOption(document.drop_list.SubCat,'16', '7230');addOption(document.drop_list.SubCat,'17', '8700');addOption(document.drop_list.SubCat,'36', 'Curve (8310)');addOption(document.drop_list.SubCat,'48', 'Pearl 8120');}if(document.drop_list.Category.value == '17'){addOption(document.drop_list.SubCat,'16', '7230');addOption(document.drop_list.SubCat,'17', '8700');addOption(document.drop_list.SubCat,'36', 'Curve (8310)');addOption(document.drop_list.SubCat,'48', 'Pearl 8120');}if(document.drop_list.Category.value == '18'){addOption(document.drop_list.SubCat,'14', '7100');addOption(document.drop_list.SubCat,'27', '7130C');addOption(document.drop_list.SubCat,'15', '7290');addOption(document.drop_list.SubCat,'20', '8800');addOption(document.drop_list.SubCat,'33', '8820');addOption(document.drop_list.SubCat,'19', 'Curve (8300)');addOption(document.drop_list.SubCat,'18', 'Pearl (8100)');}if(document.drop_list.Category.value == '19'){addOption(document.drop_list.SubCat,'14', '7100');addOption(document.drop_list.SubCat,'27', '7130C');addOption(document.drop_list.SubCat,'15', '7290');addOption(document.drop_list.SubCat,'20', '8800');addOption(document.drop_list.SubCat,'33', '8820');addOption(document.drop_list.SubCat,'19', 'Curve (8300)');addOption(document.drop_list.SubCat,'18', 'Pearl (8100)');}if(document.drop_list.Category.value == '20'){addOption(document.drop_list.SubCat,'14', '7100');addOption(document.drop_list.SubCat,'27', '7130C');addOption(document.drop_list.SubCat,'15', '7290');addOption(document.drop_list.SubCat,'20', '8800');addOption(document.drop_list.SubCat,'33', '8820');addOption(document.drop_list.SubCat,'19', 'Curve (8300)');addOption(document.drop_list.SubCat,'18', 'Pearl (8100)');}if(document.drop_list.Category.value == '21'){addOption(document.drop_list.SubCat,'21', 'Blackjack');addOption(document.drop_list.SubCat,'44', 'Blackjack II');}if(document.drop_list.Category.value == '23'){addOption(document.drop_list.SubCat,'47', 'Centro W');addOption(document.drop_list.SubCat,'30', 'Treo 650');addOption(document.drop_list.SubCat,'23', 'Treo 680');addOption(document.drop_list.SubCat,'25', 'Treo 750');}if(document.drop_list.Category.value == '24'){addOption(document.drop_list.SubCat,'24', '8125');}if(document.drop_list.Category.value == '25'){addOption(document.drop_list.SubCat,'47', 'Centro W');addOption(document.drop_list.SubCat,'30', 'Treo 650');addOption(document.drop_list.SubCat,'23', 'Treo 680');addOption(document.drop_list.SubCat,'25', 'Treo 750');}if(document.drop_list.Category.value == '26'){addOption(document.drop_list.SubCat,'26', '8525');}if(document.drop_list.Category.value == '27'){addOption(document.drop_list.SubCat,'14', '7100');addOption(document.drop_list.SubCat,'27', '7130C');addOption(document.drop_list.SubCat,'15', '7290');addOption(document.drop_list.SubCat,'20', '8800');addOption(document.drop_list.SubCat,'33', '8820');addOption(document.drop_list.SubCat,'19', 'Curve (8300)');addOption(document.drop_list.SubCat,'18', 'Pearl (8100)');}if(document.drop_list.Category.value == '29'){addOption(document.drop_list.SubCat,'37', 'Q9 Global');addOption(document.drop_list.SubCat,'29', 'RAZR V3');addOption(document.drop_list.SubCat,'43', 'V9 Razr');}if(document.drop_list.Category.value == '30'){addOption(document.drop_list.SubCat,'47', 'Centro W');addOption(document.drop_list.SubCat,'30', 'Treo 650');addOption(document.drop_list.SubCat,'23', 'Treo 680');addOption(document.drop_list.SubCat,'25', 'Treo 750');}if(document.drop_list.Category.value == '31'){addOption(document.drop_list.SubCat,'46', '16GB Iphone');addOption(document.drop_list.SubCat,'31', '4GB Iphone');addOption(document.drop_list.SubCat,'32', '8Gb Iphone');}if(document.drop_list.Category.value == '32'){addOption(document.drop_list.SubCat,'46', '16GB Iphone');addOption(document.drop_list.SubCat,'31', '4GB Iphone');addOption(document.drop_list.SubCat,'32', '8Gb Iphone');}if(document.drop_list.Category.value == '33'){addOption(document.drop_list.SubCat,'14', '7100');addOption(document.drop_list.SubCat,'27', '7130C');addOption(document.drop_list.SubCat,'15', '7290');addOption(document.drop_list.SubCat,'20', '8800');addOption(document.drop_list.SubCat,'33', '8820');addOption(document.drop_list.SubCat,'19', 'Curve (8300)');addOption(document.drop_list.SubCat,'18', 'Pearl (8100)');}if(document.drop_list.Category.value == '34'){addOption(document.drop_list.SubCat,'34', 'E62');}if(document.drop_list.Category.value == '35'){addOption(document.drop_list.SubCat,'35', '8925 (tilt)');}if(document.drop_list.Category.value == '36'){addOption(document.drop_list.SubCat,'16', '7230');addOption(document.drop_list.SubCat,'17', '8700');addOption(document.drop_list.SubCat,'36', 'Curve (8310)');addOption(document.drop_list.SubCat,'48', 'Pearl 8120');}if(document.drop_list.Category.value == '37'){addOption(document.drop_list.SubCat,'37', 'Q9 Global');addOption(document.drop_list.SubCat,'29', 'RAZR V3');addOption(document.drop_list.SubCat,'43', 'V9 Razr');}if(document.drop_list.Category.value == '38'){addOption(document.drop_list.SubCat,'38', 'Duo');}if(document.drop_list.Category.value == '42'){addOption(document.drop_list.SubCat,'40', 'CU515');addOption(document.drop_list.SubCat,'42', 'CU575 (Trax)');addOption(document.drop_list.SubCat,'41', 'CU720 (Shine)');}if(document.drop_list.Category.value == '40'){addOption(document.drop_list.SubCat,'40', 'CU515');addOption(document.drop_list.SubCat,'42', 'CU575 (Trax)');addOption(document.drop_list.SubCat,'41', 'CU720 (Shine)');}if(document.drop_list.Category.value == '41'){addOption(document.drop_list.SubCat,'40', 'CU515');addOption(document.drop_list.SubCat,'42', 'CU575 (Trax)');addOption(document.drop_list.SubCat,'41', 'CU720 (Shine)');}if(document.drop_list.Category.value == '43'){addOption(document.drop_list.SubCat,'37', 'Q9 Global');addOption(document.drop_list.SubCat,'29', 'RAZR V3');addOption(document.drop_list.SubCat,'43', 'V9 Razr');}if(document.drop_list.Category.value == '44'){addOption(document.drop_list.SubCat,'21', 'Blackjack');addOption(document.drop_list.SubCat,'44', 'Blackjack II');}if(document.drop_list.Category.value == '46'){addOption(document.drop_list.SubCat,'46', '16GB Iphone');addOption(document.drop_list.SubCat,'31', '4GB Iphone');addOption(document.drop_list.SubCat,'32', '8Gb Iphone');}if(document.drop_list.Category.value == '47'){addOption(document.drop_list.SubCat,'47', 'Centro W');addOption(document.drop_list.SubCat,'30', 'Treo 650');addOption(document.drop_list.SubCat,'23', 'Treo 680');addOption(document.drop_list.SubCat,'25', 'Treo 750');}if(document.drop_list.Category.value == '48'){addOption(document.drop_list.SubCat,'16', '7230');addOption(document.drop_list.SubCat,'17', '8700');addOption(document.drop_list.SubCat,'36', 'Curve (8310)');addOption(document.drop_list.SubCat,'48', 'Pearl 8120');}



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

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);
}