function showForm(){
	  var Width = 0, Height = 0;
	  if( typeof( window.innerWidth ) == 'number' ) {
	    Width = window.innerWidth;
	    Height = window.innerHeight;
	  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
	    Width = document.documentElement.clientWidth;
	    Height = document.documentElement.clientHeight;
	  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
	    Width = document.body.clientWidth;
	    Height = document.body.clientHeight;
	  }

      blockv=document.getElementById("block");
      blockv.style.display='block';
      formbgv=document.getElementById("formbg");
      formbgv.style.display="block";
      Ypos=Math.round(Height/2-350);
      if(Ypos<=0)Ypos<=0;
      Xpos=Math.round(Width/2-350);
      formbgv.style.top= Ypos+"px";
      formbgv.style.left= Xpos+"px";

}



function hideForm(){
      blockv=document.getElementById("block");
      formbgv=document.getElementById("formbg");
      blockv.style.display='none';
      formbgv.style.display="none";
}

window.onload=function(){
      formbgv=document.getElementById("formbg");
      formbgv.innerHTML="<div class='header'><a href='javascript:hideForm()' class='close'>Close</a><img src='img/title.png'></div>";
      formbgv.innerHTML+="<div class='form'><iframe src='addimage.php' width='600px' height='700px' bgColor='#818181' style='overflow:hidden;'> </iframe></div>";
}