function envsug(formulario){
 if (formulario.sugerencia.value=='') {
   alert ('No se puede enviar un formulario vacio');
	 return false;
 }else {
  window.open ('','sugerir','width=300,height=300');
	return true;
 }
}



var tgs = new Array( 'p' ,'h1','h3');
var szs = new Array( 'xx-small','x-small','small','medium','large','x-large','xx-large' );
var startSz = 2;
function ts( trgt,inc ) {
	if (!document.getElementById) return
	var d = document,cEl = null,sz = startSz,i,j,cTags;
	
	sz += inc;
	if ( sz < 0 ) sz = 0;
	if ( sz > 6 ) sz = 6;
	startSz = sz;
		
	if ( !( cEl = d.getElementById( trgt ) ) ) cEl = d.getElementsByTagName( trgt )[ 0 ];

	cEl.style.fontSize = szs[ sz ];

	for ( i = 0 ; i < tgs.length ; i++ ) {
		cTags = cEl.getElementsByTagName( tgs[ i ] );
		for ( j = 0 ; j < cTags.length ; j++ ) cTags[ j ].style.fontSize = szs[ sz ];
	}
}




function printpr(){
 if (document.all) {
   var OLECMDID = 7;
   /* OLECMDID values:
   * 6 - print
   * 7 - print preview
   * 1 - open window
   * 4 - Save As
   */
   var PROMPT = 1; // 2 DONTPROMPTUSER 
   var WebBrowser = '<OBJECT ID="WebBrowser1" WIDTH=0 HEIGHT=0 CLASSID="CLSID:8856F961-340A-11D0-A96B-00C04FD705A2"></OBJECT>';
   document.body.insertAdjacentHTML('beforeEnd', WebBrowser); 
   WebBrowser1.ExecWB(OLECMDID, PROMPT);
   WebBrowser1.outerHTML = "";
 }else {
   window.print();
 }	
}