Script that will block the possibility of closing the browser using the button on the right side button "X", for example, instead of the browser to turn off / pages / tab will display a window which will be only "OK" and the script will do the same thing when you press the "Back" button .. .. the only way to close the browser will be the method of CTRL + ALT + DEL - kill process.
I'm working as a Software Engineer from 4 years with web developments. I have many experienced working with web sites. I implemented so many client side functionality using java script for web sites. I have BSc Engineering degree specialized in computer engineering with second upper class. I hope you will trust me. If you need any copies of my certificates and experience letter I will be able to provide them any time.
I do not need any initial payment and if you satisfied with my work after complete this you can pay for me.