// JavaScript Document
function chk_contact(){
	var x
	var box_value = new Array()
	var box_name = new Array()
	var sum
	var str
	
	sum = 0;
	str = '';
	if(document.cf.v2.value.length > 0) 
		box_value[0] = 1; 
	else 
	{
		box_value[0] = 0;
		box_name[0] = '- Full name';
	}
	//
	if(document.cf.v5.value.length > 0) 
		box_value[1] = 1; 
	else 
	{
		box_value[1] = 0;
		box_name[1] = '- Email address';
	}
	//
	if(document.cf.v8.value.length > 0) 
		box_value[2] = 1; 
	else 
	{
		box_value[2] = 0;
		box_name[2] = '- Phone';
	}
	//
	if(document.cf.v10.value.length > 0) 
		box_value[3] = 1; 
	else 
	{
		box_value[3] = 0;
		box_name[3] = '- Your comment or request';
	}

	for (x=0;x<box_value.length;x++)
	{
		sum = sum + box_value[x];
	}
	
	for (x=0;x<box_name.length;x++)
	{
		if(box_name[x] != null)
			str = str + box_name[x] + '\n';
	}
	
	if(sum < 4 )
	{
		alert('Please fill the following item(s)\n' + str);
		return false;
	}
	else 
	{
		return true;
	}
}