var picture=new Array("pix/pic1.jpg","pix/pic2.jpg");	
var alt=new Array("School Sign","Ivy Road Primary School");

//prefetch images into offscreen image
for (j=1;j<3;j++)
	{
		new Image(400,300).src=picture[j-1];
	}
var s;
var timeoutId;	
var i=1;	

function changePics(i)
	{
		if (i<5)
	    {
	    	document.getElementById("school").src=picture[i-1];
				document.getElementById("school").alt=alt[i-1];
				document.getElementById("school").title=alt[i-1];
				i++;
				if (i>2){i=1;}
				s="changePics("+i+")";
        timeoutId=setTimeout(s,5000);
			}
	}
	
	
function window800x600()
			{
				window.resizeTo(800,600);
				window.moveTo(0,0);
			}