// when costomer select other company then activate text fild and set bold other company textHTML
function OderComapny(fild, element, tag)
{
	var selectFild = document.getElementById(fild);
	
	index = selectFild.selectedIndex;
	value = selectFild.options[index].value;
	
	if(value == 'others')
		SetGrey(element, tag, true);
	else
		SetGrey(element, tag, false);
}
function SetGrey(textFild, tag, flag)
{
	var element = document.getElementById(textFild);
	
	if(flag)
	{
		// set element enabled
		element.disabled = false;
		// set tag bold
		SetTagClass(tag, "bold");
	}
	else
	{
		// set element disabled
		element.disabled = true;
		// set tag no bold
		SetTagClass(tag, "grey");
	}
}