function checkWindow()
			{
				var a,b,c,d,x,y,xy;
				var h = 247;
				
				b = document.body.scrollHeight;
				c = document.body.offsetHeight;
			  
				if (b > c) // all but Explorer Mac
				{
					d = document.body.scrollHeight;
				}
				else { d = document.body.offsetHeight; }
				
				if (self.innerHeight) // all except Explorer
				{
					x = self.innerWidth;
					y = self.innerHeight;
					
					if (y > d) { y = y - h; }
					if (y < d) { a = d - y; y = y + a - h; }
					if (y == d) {	y = y - h; }
				}
				else if (document.documentElement && document.documentElement.clientHeight)
					// Explorer 6 Strict Mode
				{
					x = document.documentElement.clientWidth;
					y = document.documentElement.clientHeight;
			
					if (y > d) { y = y - h; }
					if (y < d) { a = d - y; y = y + a - h; }
					if (y == d) {	y = y - h; }
				}
				else if (document.body) // other Explorers
				{
					x = document.body.clientWidth;
					y = document.body.clientHeight;
					
					if (y > d) { y = y - h; }
					if (y < d) { a = d - y; y = y + a - h; }
					if (y == d) {	y = y - h; }
				}
				
				xy = y + "px";
				return xy;
			}