function Is() {
agent = navigator.userAgent.toLowerCase();
this.major = parseInt(navigator.appVersion);
this.minor = parseFloat(navigator.appVersion);
this.ns = ((agent.indexOf('mozilla') != -1) && ((agent.indexOf('spoofer')
== -1)
     && (agent.indexOf('compatible') ==  -1)));
this.ns2 = (this.ns && (this.major == 3));
this.ns3 = (this.ns && (this.major == 3));
this.ns4b = (this.ns && (this.major == 4) && (this.minor <= 4.03));
this.ns4 = (this.ns && (this.major == 4));
this.ns6 = (this.ns && (this.major >= 5));
this.ie = (agent.indexOf("msie") != -1);
this.ie3 = (this.ie && (this.major < 4));
this.ie4 = (this.ie && (this.major == 4) && (agent.indexOf("msie 5.0")
 == -1));
this.ie5 = (this.ie && (this.major == 4) && (agent.indexOf("msie 5.0")
 != -1));
this.ie55 = (this.ie && (this.major == 4) && (agent.indexOf("msie 5.5")
 != -1));
this.ie6 = (this.ie && (agent.indexOf("msie 6.0")!=-1) );
this.aol = (agent.indexOf("aol") != -1);
this.aol3 = (this.aol && this.ie3);
this.aol4 = (this.aol && this.ie4);
this.aol5 = (this.aol && this.ie5);
}
var is = new Is();

function winResize() {
if(is.ns4 ||is.ns6||is.ie4||is.ie5||is.ie55||is.ie6) {
history.go(0);
}
}

function displayImage(imageName, image1_width, image1_height) {
if(is.ns4 || is.ns6) {
available_width = innerWidth;
available_height = innerHeight;
}
else if(is.ie4 || is.ie5 || is.ie55 || is.ie6) {
available_width=document.body.clientWidth;
available_height=document.body.clientHeight;
}
if(is.ie4 || is.ie5 || is.ie55 || is.ie6 || is.ns6 || is.ns4) {

width_ratio = (available_width - 20)/ image1_width;
height_ratio = (available_height - 60) / image1_height;
if (width_ratio < height_ratio) {
effective_ratio = width_ratio;
}
else {
effective_ratio = height_ratio;
}
image1_width = image1_width * effective_ratio * 0.97;
image1_height = image1_height * effective_ratio * 0.97;

var image1 = '<img src="' + imageName + '" width="' + image1_width
    + '"  height="' + image1_height + '">';
document.write(image1);
}
}