var ClassInvalid = "invalid-textbox";
var ClassValid = "valid-textbox";

function checkrequire(input,min)
{
	var input_name = input.id;
	var input_desc = input_name + "_desc";
	
	if(min == null || min == 0)
	{
		if(input.value.Trim().length == 0)
		{
			document.getElementById(input_name).className = ClassInvalid;
			document.getElementById(input_desc).innerHTML = txt_alert[input_name];
			return false;
		}
		else
		{
			document.getElementById(input_name).className = ClassValid;
			document.getElementById(input_desc).innerHTML = "";	
			return true;
		}
	}
	else
	{	
		if (input.value.length < min)
		{
			document.getElementById(input_name).className = ClassInvalid;
			document.getElementById(input_desc).innerHTML = txt_alert[input_name];
			return false;
		} 
		else 
		{
			document.getElementById(input_name).className = ClassValid;
			document.getElementById(input_desc).innerHTML = "";
			return true;
		}
	}
}