function resizeImage(){
	var window_height = document.body.clientHeight;
	var window_width = document.body.clientWidth;
	var image_width = document.getElementById('bgImg').width;
	var image_height = document.getElementById('bgImg').height;
	var height_ratio = image_height / window_height;
	var width_ratio = image_width / window_width;
	//if (height_ratio > width_ratio){ // taller than it is wide	
		//document.getElementById('bgImg').style.width = 'auto';
		//document.getElementById('bgImg').style.height = '100%';
	//}else{ // wider than it is tall
		document.getElementById('bgImg').style.width = '100%';
		document.getElementById('bgImg').style.height = 'auto';
	//}
}
	
function random_imglink(){
	var myimages=new Array()
	var ry=Math.floor(Math.random()*myimages.length)
		if (ry==0) ry=1;
		document.getElementById('bgImg').src = myimages[ry];
		resizeImage();
}

var mooSize = new Class({
    Image: null,
    MinimumWidth: /*1150*/ 0,
    MinimumHeight: /*700*/ 0,
    initialize: function() {
        window.addEvent('resize', this.resized.bind(this));
        this.doResize();
    },
    getWindowWidth: function() {
        var myWidth = 0
        if (typeof (window.innerWidth) == 'number') {
            //Non-IE
            myWidth = window.innerWidth;
        } else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
            //IE 6+ in 'standards compliant mode'
            myWidth = document.documentElement.clientWidth;
        } else if (document.body && (document.body.clientWidth || document.body.clientHeight)) {
            //IE 4 compatible
            myWidth = document.body.clientWidth;
        }


        return myWidth;
    },
    getWindowHeight: function() {
        var myHeight = 0;
        if (typeof (window.innerWidth) == 'number') {
            //Non-IE
            myHeight = window.innerHeight;
        } else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
            //IE 6+ in 'standards compliant mode'
            myHeight = document.documentElement.clientHeight;
        } else if (document.body && (document.body.clientWidth || document.body.clientHeight)) {
            //IE 4 compatible
            myHeight = document.body.clientHeight;
        }

        return myHeight;
    },
    doResize: function() {
        if (this.Image == null) {
            this.Image = $('bgImg');
        }
        this.Image.style.width = '100%';
        this.Image.style.height = 'auto';
        if (this.Image.width.toInt() <= this.MinimumWidth) {
            this.Image.style.width = this.MinimumWidth;
        }
		var window_height = this.getWindowHeight();
		var window_width = this.getWindowWidth();
		var image_width = this.Image.width;
		var image_height = this.Image.height;
		
		if (image_height < window_height) {
		    this.Image.setStyle('height', window_height);
		    this.Image.setStyle('width', 'auto');
		}
    },
    resized: function(event) {
        this.doResize();
    }
});