function url(string,value,base_url){
	var type, target;
	
	if (value == 0)
		type = "_self";
	else if (value == 1)
		type = "_blank";
	else
		type = "_self";
	
	if (base_url == 0)
		target = "http://www.roi.com.au"+string;
	else
		target = string;
		
	window.open(target,type);
}