Watch the quotes and doublequotes
the ' and the "
text starts with ' and ends with '
so:
$return_value = ' some text and doublequote " " and singlequotes ' ' ';
will error since the text will be not corrct
you need to escape the ' so it will be parsed as text instead of end of text
$return_value = ' some text and doublequote " " and singlequotes \' \' ';
$return_value .= '<input type="text" name="string" size="22" class="boks" value="fill in your searchbla here..." onClick="if(this.value == \'fill in your searchbla here...\') { this.value = \'\'; }" onBlur="if(this.value == \'\') { this.value = \'Fill in your searchbla here....\'; }" /> '
might work
John