function intscreen()
{
	var  deskscreen=screen.width;
	
	if(deskscreen >= 800 && deskscreen < 900)
	{
		document.body.style.backgroundImage="url(images/bg900.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
	}
   else if(deskscreen >= 900 && deskscreen < 1000)
   {
		document.body.style.backgroundImage="url(images/bg1000.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 1000 && deskscreen < 1100)
   {
		document.body.style.backgroundImage="url(images/bg1100.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 1100 && deskscreen < 1200)
   {
		document.body.style.backgroundImage="url(images/bg1200.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 1200 && deskscreen < 1300)
   {
		document.body.style.backgroundImage="url(images/bg1300.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 1300 && deskscreen < 1400)
   {
		document.body.style.backgroundImage="url(images/bg1400.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 1400 && deskscreen < 1500)
   {
		document.body.style.backgroundImage="url(images/bg1500.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 1500 && deskscreen < 1600)
   {
		document.body.style.backgroundImage="url(images/bg1600.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 1600 && deskscreen < 1700)
   {
		document.body.style.backgroundImage="url(images/bg1700.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 1700 && deskscreen < 1800)
   {
		document.body.style.backgroundImage="url(images/bg1800.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 1800 && deskscreen < 1900)
   {
		document.body.style.backgroundImage="url(images/bg1900.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 1900 && deskscreen < 2000)
   {
		document.body.style.backgroundImage="url(images/bg2000.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 2000 && deskscreen < 2100)
   {
		document.body.style.backgroundImage="url(images/bg21000.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 2100 && deskscreen < 2200)
   {
		document.body.style.backgroundImage="url(images/bg2200.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
   else if(deskscreen >= 2200 && deskscreen < 2300)
   {
		document.body.style.backgroundImage="url(images/bg2300.gif)";
		document.body.style.backgroundRepeat="no-repeat";
		document.body.style.backgroundAttachment="scroll";
   }
}