increase heap memory in applet

 export _JAVA_OPTIONS="-Xmx2g"

Adding policy to a applet java

To Provide permissions to a applet first you need to write a Policy file.

Policy file can be created using a policytool .By this way a policy file can be created.

And to run the applet with the permissions added in the policyfile you need to run the applet in the following way:

appletviewer -J-Djava.security.policy=policy-file  applet-file

Making window.find method move to the start of the webpage firefox javascript

To make the window.find method move to the starting of the webpage incase when user clicked clear or he is trying to search for another word.

You need to select a word in the starting of the Page and using that word you need to perform window.find method which makes the cursor to move to the start of the webpage

For example in my case i select a word "linux" which lies in the first line of my webpage

You need to do like this:

sel.removeAllRanges(); // To remove any of the selections previously available in the webpage

found=window.find("linux,"false,false); // To select the word in the first line

sel=window.getSelection(); // To select the word to sel

range=sel.getRangeAt(0); // to add the selection to the range

if (sel.RangeCount > 0 ) sel.removeAllRanges(); // To remove the selection made by "linux" word

sel.addRange(range); // To add the selection to sel using addRange

This will do the trick moving to the first part of the webpage.

For finding text in webpage javascript

In Internet Explorer 

to copy the content of the webpage use

 txt=document.body.CreateTextRange();

Now we need to search the desired string using findtext method

  Assume string is the desired string to be searched

1)if txt.findtext(string)
    {
 2)       txt.select() ; //will highlight the searched word
        
}

For moving to the next string you have to bookmark the String
we need to move to the end we use

 3)   txt.collapse(false) ;

if we use true in this case it moves to the beginning

And again calling the  above three commands will move to the next word.

If we want to move to the previously searched word we need to follow a technique called BookMarking =

var dd=txt.getBookmark();

Here the  getBookMark saves a opaque string which can be used to move to the previously referrenced
textrange using the

txt.moveToBookmark(dd);

likewise you can save the Bookmark for each searched string and retrieve it back.
 
To search a word in firefox and other browsers we need to use window.find method

To search forward use

window.find("string to search",false,false);
First argument is string to be searched
Second false signifies no need of case sensitivity
Third false signifies forward search

To search Backward use

window.find("string to search",false,true);
First argument is string to be searched
Second false signifies no need of case sensitivity
Third  true signifies backward search.

To get the selection you can use

sel=window.getSelection();

This can also be used separately if you want to select the text highlighted by the visitor.

To copy the selection to a variable use:

range=sel.getRangeAt(0);

To add the range to the selection use

sel.addRange(range);

To remove the selection  from the webPage  you can use

sel.removeAllRanges();

to hide and make visible the textbox javascript

To hide the textbox use


var gg=document.getElementById("txtbox");
gg.style.visibility='hidden';


To make visible the textbox use:
var gg=document.getElementById("txtbox");
gg.style.visibility='visible';

table to have empty cells

The table to have empty cells it must be specified with  &nbsp to how many want based on the cell-size.

it should be specified as:

<table>
<tr><td>hello</td><td>&nbsp;&nbsp;&nbsp;</td></tr>
</table>

delete the space between two tables

To delete the space between two tables:

Simply add align="left" attribute in both the tables like below and also add <br/> below the first table to avoid the second table coming to the right of the first table.

<table align="left">    
other html code here
</table><br/>

<table align="left">    
other html code here
</table>