function validatetextbox(id)
{
    var txtbox = document.getElementById(id);
    if(!txtbox)
    {
        return 0;
    }
    else
    {
       if((trim(txtbox.value)).length==0)
       return 0;
       else
       return 1; 
    
    }
};

// Removes leading whitespaces
function LTrim( value ) {
	
	var re = /\s*((\S+\s*)*)/;
	return value.replace(re, "$1");
	
};

// Removes ending whitespaces
function RTrim( value ) {
	
	var re = /((\s*\S+)*)\s*/;
	return value.replace(re, "$1");
	
};

// Removes leading and ending whitespaces
function trim( value ) {
	
	return LTrim(RTrim(value));
	
};