var d = 'down';

function changeOpac(opacity, id) { 
	//alert(id);
    var object = document.getElementById(id).style; 
    object.opacity = (opacity / 100); 
    object.MozOpacity = (opacity / 100); 
    object.KhtmlOpacity = (opacity / 100); 
    object.filter = "alpha(opacity=" + opacity + ")";
} 

function opacity(id, opacStart, opacEnd, millisec) { 
    
    var speed = Math.round(millisec / 100); 
    var timer = 0; 
    
    if(opacStart > opacEnd) { 
        for(i = opacStart; i >= opacEnd; i--) { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        } 
        
        
    } else if(opacStart < opacEnd) { 
        for(i = opacStart; i <= opacEnd; i++) 
            { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        }
        
    } 
}

function dropdown_email() {
	opacity('emailform',0,70,500);
}