Ten:
Código PHP:
<html>
<head>
<script language="JavaScript">
function startSearch(){
searchString = document.searchForm.searchText.value;
if(searchString != ""){
searchEngine = document.searchForm.whichEngine.selectedIndex + 1;
finalSearchString = "";
if(searchEngine == 1){
window.open("http://www.google.com/search?q=" + searchString,"_blank","directories=no, menubar=no,status=no,toolbar=no,location=no,scrollbars=yes,fullscreen=no,height=400,width=600");
}
if(searchEngine == 2){
window.open("http://www.altavista.digital.com/cgi-bin/query?pg=q&what=web&fmt=.&q=" + searchString,"_blank","directories=no, menubar=no,status=no,toolbar=no,location=no,scrollbars=yes,fullscreen=no,height=400,width=600");
}
if(searchEngine == 3){
window.open("http://av.yahoo.com/bin/query?p=" + searchString + "&hc=0&hs=0","_blank","directories=no, menubar=no,status=no,toolbar=no,location=no,scrollbars=yes,fullscreen=no,height=400,width=600");
}
}
}
</script>
</head>
<body>
<table border cellpadding=0 cellspacing=0>
<tr>
<td>
<form style="margin:0" name="searchForm" action="">
<input name="searchText" type="text">
<select NAME="whichEngine">
<option SELECTED>Google</option>
<option>Altavista</option>
<option>Yahoo!</option>
</select>
<input TYPE="submit" onClick="startSearch()" VALUE="Buscar">
</form>
</table>
</body>
</html>
Saludos!