function getURLParam(parameter) {  
	  var loc = location.search.substring(1, location.search.length);  
	  var param_value = false;  
	  var params = loc.split("&");  
	  for (i=0; i<params.length;i++) {  
		  param_name = params[i].substring(0,params[i].indexOf('='));  
		  if (param_name == parameter) {                                         
			  param_value = params[i].substring(params[i].indexOf('=')+1)  
		  }  
	  }  
	  if (param_value) {  
		  return param_value;  
	  }  
	  else {  
		  return false;  
	  }  
}