var hoehe=screen.availHeight

var big=(hoehe>700);
function checkScreen() 
{
	if(document.layers)
		{
		document.layers["navojs"].visibility="hidden";
		}
	if(document.all)
		{
		document.all["navojs"].style.visibility="hidden";
		}
	if(document.getElementById)
		{
		document.getElementById("navojs").style.visibility="hidden";
		}
	if (big==1) 
	{
	if(document.all)
		{
		document.all["maindoc"].style.left="0px";
		document.all["maindoc"].style.top="0px";
		document.all["maindoc"].style.width="589px";
		document.all["maindoc"].style.visibility="visible";
		document.all["maindoc"].style.position="absolute";
		}
	if(document.getElementById)
		{
		document.getElementById("maindoc").style.left="0px";
		document.getElementById("maindoc").style.top="0px";
		document.getElementById("maindoc").style.width="589px";
		document.getElementById("maindoc").style.visibility="visible";
		document.getElementById("maindoc").style.position="absolute";
		}
	}

	if (big==0) 
	{
	if(document.layers)
		{
		document.layers["maindoc"].visibility="hidden";
		}
	if(document.all)
		{
		document.all["maindoc"].style.left="-120px";
		document.all["maindoc"].style.top="-120px";
		document.all["maindoc"].style.width="589px";
		document.all["maindoc"].style.visibility="visible";
		document.all["maindoc"].style.position="absolute";
		}
	if(document.getElementById)
		{
		document.getElementById("maindoc").style.left="-120px";
		document.getElementById("maindoc").style.top="-120px";
		document.getElementById("maindoc").style.width="589px";
		document.getElementById("maindoc").style.visibility="visible";
		document.getElementById("maindoc").style.position="absolute";
		}
	}

}