function OpenCentreWindow(source)
{
var h=480; // height of window
var w=480; // width of window
var leftPos=(screen.width/2)-(w/2); // left position of window
var topPos=(screen.height/2)-(h/2); // top position of window
var pos='left='+leftPos+',top='+topPos;
props=pos+',width='+w+',height='+h;
window.open(source,'new',props);
}


function OpenCentreWindowL(source)
{
var h=600; // height of window
var w=470; // width of window
var leftPos=(screen.width/2)-(w/2); // left position of window
var topPos=(screen.height/2)-(h/2); // top position of window
var pos='left='+leftPos+',top='+topPos;
props=pos+',width='+w+',height='+h;
window.open(source,'new',props);
}

function OpenCentreWindowS(source)
{
var h=350; // height of window
var w=480; // width of window
var leftPos=(screen.width/2)-(w/2); // left position of window
var topPos=(screen.height/2)-(h/2); // top position of window
var pos='left='+leftPos+',top='+topPos;
props=pos+',width='+w+',height='+h;
window.open(source,'new',props);
}

function OpenCentreWindowXW(source)
{
var h=400; // height of window
var w=640; // width of window
var leftPos=(screen.width/2)-(w/2); // left position of window
var topPos=(screen.height/2)-(h/2); // top position of window
var pos='left='+leftPos+',top='+topPos;
props=pos+',width='+w+',height='+h;
window.open(source,'new',props);
}

function OpenCentreWindowXWH(source)
{
var h=510; // height of window
var w=660; // width of window
var leftPos=(screen.width/2)-(w/2); // left position of window
var topPos=(screen.height/2)-(h/2); // top position of window
var pos='left='+leftPos+',top='+topPos;
props=pos+',width='+w+',height='+h;
window.open(source,'new',props);
}

function OpenCentreWindowW(source)
{
var h=550; // height of window
var w=550; // width of window
var leftPos=(screen.width/2)-(w/2); // left position of window
var topPos=(screen.height/2)-(h/2); // top position of window
var pos='left='+leftPos+',top='+topPos;
props=pos+',width='+w+',height='+h;
window.open(source,'new',props);
}

function OpenCentreWindowWL(source)
{
var h=620; // height of window
var w=600; // width of window
var leftPos=(screen.width/2)-(w/2); // left position of window
var topPos=(screen.height/2)-(h/2); // top position of window
var pos='left='+leftPos+',top='+topPos;
props=pos+',width='+w+',height='+h;
window.open(source,'new',props);
}

function OpenCentreWindowSH(source)
{
var h=400; // height of window
var w=400; // width of window
var leftPos=(screen.width/2)-(w/2); // left position of window
var topPos=(screen.height/2)-(h/2); // top position of window
var pos='left='+leftPos+',top='+topPos;
props=pos+',width='+w+',height='+h;
window.open(source,'new',props);
}

function OpenCentreWindowWS(source)
{
var h=500; // height of window
var w=550; // width of window
var leftPos=(screen.width/2)-(w/2); // left position of window
var topPos=(screen.height/2)-(h/2); // top position of window
var pos='left='+leftPos+',top='+topPos;
props=pos+',width='+w+',height='+h;
window.open(source,'new',props);
}

function OpenCentreWindowBIG(source)
{
var h=590; // height of window
var w=680; // width of window
var leftPos=(screen.width/2)-(w/2); // left position of window
var topPos=(screen.height/2)-(h/2); // top position of window
var pos='left='+leftPos+',top='+topPos;
props=pos+',width='+w+',height='+h;
window.open(source,'new',props);
}