function change_region(country,region,sel){
		
		var objSel = document.forms["load"].elements[region];
		
	 
		 
		var t=document.forms["load"].elements[country].selectedIndex;
		
		if (t==0) {
			
		var cnt=0;
			objSel.options[0] = new Option(" ");
			objSel.options[0].selected=true;
			objSel.disabled=true;
		
	
		}
		
		else {
			
			for (var i = 0; i< objSel.options.length; i++) {
			   objSel.options[i]=null;  i--;		  
			 }	
						
				
			for (var j=0; j<all_reg[t-1].length; j++)	{
			objSel.options[j] = new Option( all_regname[t-1][j],all_reg[t-1][j]);
			if (sel==all_reg[t-1][j]){			
				objSel.options[j].selected=true;
			}
			}
			objSel.disabled=false;
		}
}

function change_mas(){

	if (document.forms["load"].elements['gruz_ot'].value=='from'){
		document.forms["load"].elements['mas_to'].disabled=true;
		document.forms["load"].elements['mas_from'].disabled=false;
		}
	
	if (document.forms["load"].elements['gruz_ot'].value=='to'){
		document.forms["load"].elements['mas_from'].disabled=true;
		document.forms["load"].elements['mas_to'].disabled=false;
		}

	if (document.forms["load"].elements['gruz_ot'].value=='all'){
		document.forms["load"].elements['mas_to'].disabled=false;
		document.forms["load"].elements['mas_from'].disabled=false;}		
	
	
	}
function change_v(){

	if (document.forms["load"].elements['obyem_ot'].value=='from'){
		document.forms["load"].elements['v_to'].disabled=true;
		document.forms["load"].elements['v_from'].disabled=false;}
	
	if (document.forms["load"].elements['obyem_ot'].value=='to'){
		document.forms["load"].elements['v_to'].disabled=false;
		document.forms["load"].elements['v_from'].disabled=true;}

	if (document.forms["load"].elements['obyem_ot'].value=='all'){
		document.forms["load"].elements['v_to'].disabled=false;
		document.forms["load"].elements['v_from'].disabled=false;}		
	
	
	}	
	
function check_field(field,res){
	txt=document.forms["load"].elements[field].value;
	var r = /\W/; // создаем рег.выражение, определяющие "не символ слова" 
	if ((txt.search(r) < 0) && (txt.length>4))
	{
		document.getElementById(res).innerText="+";		
		document.getElementById(res).style.color='green';
		}
	else  {
		document.getElementById(res).innerText="!";
		document.getElementById(res).style.color='red';
		
		}	
	}
	
function show_contacts(){
	document.getElementById('add_cnt').style.display='block'; 
	document.getElementById('add_but_id').style.display='none';
	document.forms["load"].elements['person'].value='';
	document.forms["load"].elements['mobile'].value='';
	document.forms["load"].elements['tel'].value='';
	document.forms["load"].elements['email'].value='';
	document.forms["load"].elements['icq'].value='';
	document.forms["load"].elements['skype'].value='';
	document.forms["load"].elements['note'].value='';
	
	return false;
	
	}	
function hide_contacts(){
	document.getElementById('add_cnt').style.display='none'; 
	document.getElementById('add_but_id').style.display='block';
	
	}