function comprarVideo(vid, msg) {  
	if (confirm(msg)) 
	{
		self.location = "comprar_video.php?v="+vid;
	} else {
		return false;
	}
}

function utf8_decode(str_data){               
	var tmp_arr = [], i = ac = c = c1 = c2 = 0;
	while (i < str_data.length) {    
		c = str_data.charCodeAt(i); 
                if (c < 128) {  
                	tmp_arr[ac++] = String.fromCharCode(c);    
                        i++;                   
		}                     
		else                        
			if ((c > 191) && (c < 224)) {         
                        	c2 = str_data.charCodeAt(i + 1);               
				tmp_arr[ac++] = String.fromCharCode(((c & 31) << 6) | (c2 & 63));      
                                i += 2;      
			} else {                                  
				c2 = str_data.charCodeAt(i + 1);     
				c3 = str_data.charCodeAt(i + 2);    
				tmp_arr[ac++] = String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63)); 
                                i += 3;    
			}            
	}                               
	return tmp_arr.join('');
}