if (document.images) {


	m1_cold = new Image();
	m1_cold.src = '_img/m1.jpg'
	m1_hot = new Image();
	m1_hot.src = '_img/m1h.jpg'
	m2_cold = new Image();
	m2_cold.src = '_img/m2.jpg'
	m2_hot = new Image();
	m2_hot.src = '_img/m2h.jpg'
	m3_cold = new Image();
	m3_cold.src = '_img/m3.jpg'
	m3_hot = new Image();
	m3_hot.src = '_img/m3h.jpg'
	m4_cold = new Image();
	m4_cold.src = '_img/m4.jpg'
	m4_hot = new Image();
	m4_hot.src = '_img/m4h.jpg'
	m5_cold = new Image();
	m5_cold.src = '_img/m5.jpg'
	m5_hot = new Image();
	m5_hot.src = '_img/m5h.jpg'

function hot() {
	var img = hot.arguments;
	for (var i=0; i<img.length; i+=2) {
    	  eval( 'document.' + img[i] + '.src = ' + img[i+1]  + '_hot.src' ) ; 
	}
}

function cold() {
	var img = cold.arguments;
	for (var i=0; i<img.length; i+=2) {
    	  eval( 'document.' + img[i] + '.src = ' + img[i+1]  + '_cold.src' ) ; 
	}
}
}