My page:
Code:
<! DOCTYPE HTML PUBLIC "//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="author" content="Petar Nikic">
<meta name="description" content="tutorijali">
<meta name="keywords" content="education, tutorials">
<link rel="stylesheet" href="css/stil.css">
   
  <title>Serbian IT Education </title>
<script type="text/javascript"> 

</script> 
      </head>
    
	      <body>
		  <form>
<input type="text" id="search" /><input type="button" value="Search" onClick="get();" />
</form>
	  <ul id="nav">
	  <li><a href="#">Pocetna</a></li>
	  <li><a href="#">Pocetna</a></li>
	  <li><a href="#">Pocetna</a></li>
	  <li><a href="#">Pocetna</a></li>
	  </ul>
	  <div id="content">
	     <div class="box">
	  <center><h2>Dobro Dosli</h2></center>
	   <img class="alignleft" src="CSS/slike/cvet.jpg" width="200" height="200" alt="" />
	      <p id="a">
		  This website is developed by <strong>PETAR NIKIC</strong> the content is about computer programming and practice skill for <u>FREE</u>
         Greets to <strong><u>ALEKSANDAR ARSIC</strong></u>							
						
		  </p>
               <div id="content2">
			     <div class="box">
				 <center><h2>Tutorial By: ALEKSANDAR ARSIC</h2></center>
             			  <center><iframe width="560" height="315" src="http://www.youtube.com/embed/usQk-rEvQMs" frameborder="0" allowfullscreen></iframe></center>
			   
			     </div>
			   
			   </div>		  
	   </div>
	  </div>
	   

	  
	  
	  
	  
	      </body>
CSS:
Code:
body{
background-color:#E8E8E8;
font-family:Tahoma;
background-image:url(slike/Cover.jpg);
background-repeat:repeat-x;
}
#container{
text-align:center;
margin:5px;
}
#nav {
width:100%;
padding:0px;
list-style-type:none;
}
#nav li{
position:relative;
top:30px;
left:50px;
color:white;
list-style-type:none;
padding:0px;
text-align:center;
width: 80px;
float:left;
}
#nav  li a {
color:#C4C0C0;
text-decoration:none;
-webkit-transition-duration: .4s;
opacity:0.8;
}

#nav li a:hover{
text-decoration:none;
color:#FFC400;
cursor:pointer;
}
#content{
padding:32px;
background-color:#FFF;
position:absolute;
top:200px;
left:120px;
width:680px;
height:400px;
border:1px solid #BDBDBD;
float:left;
}
.box{
margin: 0 0 40px 0;
}
img.alignleft {
float: left;
margin: 5px 20px 20px 0;
}
#content2{
background-color:#FFF;
padding:32px;
position:absolute;
width:680px;
height:400px;
top:464px;
left:-1px;
border:1px solid #BDBDBD;
float:left;
margin:auto;
}
#search {
height:30px;
width:200px;
position:relative;
margin-top: 10px;
margin-left:80%;
background-color:#453c35;
border:1px solid #453c35;
color:#ffffff;
}
.highlight
{
background-color:yellow;
}
The problem is I need javascript code to search for word that user enter and highlight that word with light yellow color. I looked all over the internet for solutions but just none of them work.