function html_params(params)
{
 if (!(mytype(params)=='object')) return '';
 var html='';	
 for(var key in params)
 {
  html+=' '+key+'="'+params[key]+'"';
 }
 return html;
}

function html_tag(tag,data,params)
{
 var html='';	
 html+='<'+tag;
 html+=html_params(params);
 switch(tag)
 {
  case 'img':
  case 'input' : html+='/>'; return html;
 }
 html+='>';
 html+=data;
 html+='</'+tag+'>';
 return html;	
}