function check_form(x,type) {

		submitOK="True";
		var message = "";

		if (type == 1)
			message = "Form incomplete. Before registering a supplier or uploading a picture, please \n\n";
		else
			message = "Form incomplete. Before modifying a supplier's profile or uploading a picture, please \n\n";

		if (x.ht_co_name.value == "")
 		{ message += "- Enter your supplier's name\n";					submitOK="False"; }

		if (x.ht_address.value == "")
 		{ message += "- Enter your supplier's address\n";				submitOK="False"; }

		if (x.ht_postcode.value == "")
 		{ message += "- Enter your supplier's postcode\n";				submitOK="False"; }


  		var elm=x.elements['ht_business[]'];
		var found = false;

  		for (i=0;i<elm.length;i++) {
			var tmp=elm[i];
    			if (tmp.selected && tmp.value != "0") 					{ found = true; break; }
  		}


		if (found == false)
 		{ message += "- Enter your type of business\n";					submitOK="False"; }

		if (x.ht_text.value == "")
 		{ message += "- Describe in general your company and products\n";	submitOK="False"; }

		if (x.ht_product_text.value == "")
 		{ message += "- Describe your company's main product\n";			submitOK="False"; }
 
		if (x.ht_contact.value == "") 
 		{ message += "- Enter a contact name for your supplier\n";			submitOK="False"; }

		if (x.ht_tel.value == "")
 		{ message += "- Enter a telephone number for your supplier\n";		submitOK="False"; }

		if (x.ht_email.value == "")
 		{ message += "- Enter an email address for your supplier\n";		submitOK="False"; }

		if (x.ht_email.value.length > 2 && !isValidEmail (x.ht_email.value))
		{ message += "- Enter a valid email address for your supplier\n";		submitOK="False"; }

		if (x.ht_pwd.value == "")
		{ message += "- Enter a login password for your supplier \n";		submitOK="False"; }
		else 
		if (x.ht_pwd.value.length < 5)
		{ message += "- Enter a password that is 5 or more characters\n";		submitOK="False"; }

		if (x.ht_rep_contact.value == "") 
 		{ message += "- Enter a contact name for your representative\n";		submitOK="False"; }

		if (x.ht_rep_tel.value == "")
 		{ message += "- Enter a telephone number for your representative\n";	submitOK="False"; }

		if (x.ht_rep_email.value == "")
 		{ message += "- Enter an email address for your representative\n";	submitOK="False"; }

		if (x.ht_rep_email.value.length > 2 && !isValidEmail (x.ht_rep_email.value))
		{ message += "- Enter a valid email address for your representative\n";	submitOK="False"; }

		var flg = check_products(x); 

		if (flg == false)
 		{ message += "- Enter the required products for your supplier\n";		submitOK="False"; }

		if (submitOK=="False")
		{ alert(message); return false; }

 		return true;
	} <!-- end of function -->


	function check_products(x) {

  		var elm=x.elements['hbox[]'];
		if (elm){
  		for (i=0;i<elm.length;i++) {
			var tmp=elm[i];
    			if (tmp.type=="checkbox" && tmp.checked)
      			return true;
  		}}

  		var elm=x.elements['cbox1[]'];
		if (elm){
  		for (i=0;i<elm.length;i++) {
			var tmp=elm[i];
    			if (tmp.type=="checkbox" && tmp.checked)
      			return true;
  		}}

  		var elm=x.elements['cbox2[]'];
		if (elm){
  		for (i=0;i<elm.length;i++) {
			var tmp=elm[i];
    			if (tmp.type=="checkbox" && tmp.checked)
      			return true;
  		}}

  		var elm=x.elements['cbox3[]'];
		if (elm){
  		for (i=0;i<elm.length;i++) {
			var tmp=elm[i];
    			if (tmp.type=="checkbox" && tmp.checked)
      			return true;
  		}}

		return false;
	} <!-- end of function -->



	function UpdateCheckBoxes(x, r, idxx) {
		var r		= parseInt (r);
		var idx	= parseInt (idxx);

		if (r == 1) {
  			range=document.formX.range1;
  			var elm=document.formX.elements['cbox1[]'];
		} else if (r == 2) {
  			range=document.formX.range2;
  			var elm=document.formX.elements['cbox2[]'];
		} else {
  			range=document.formX.range3;
  			var elm=document.formX.elements['cbox3[]'];
		}

		var xr1	= range[idx].value;
		var xr2	= range[idx+1].value;
		var r1	= parseInt (xr1);
		var r2	= parseInt (xr2);

		//alert (r1);
		//alert(r2);


		if (elm) { 
  			xState=x.checked;
  			for(i=r1;i<elm.length && i < r2; i++) {
   				if(elm[i].type=="checkbox") {
     					elm[i].checked=xState;
				}
			}
		}
	} <!-- end of function -->