<script language="javascript" type="text/javascript">
var flag1=0; 
var flag2=0; 

function NumberInc() 
{ 
if(flag1==1 && flag2==1) 
{alert("Error!");} 
else 
{ 
if(flag1==1) 
{ 
document.all.textbox_qty.value++; 
setTimeout("NumberInc()",100); 
} 
if(flag2==1) 
{ 
document.all.textbox_qty.value--; 
setTimeout("NumberInc()",100); 
} 
} 
} 

function md(obj) 
{ 
if(obj.id=="Button1") flag1=1; 
if(obj.id=="Button2") flag2=1; 
NumberInc(); 
} 

function mo(obj) 
{ 
if(obj.id=="Button1") flag1=0; 
if(obj.id=="Button2") flag2=0; 
} 
</script>

while($get_details=mysql_fetch_array($result))
            {
                             //....
                echo "<form name='shopping_cart_form' method='post' action='include/shopping_cart_form.php' onsubmit='return dosubmit(this);'>";
                echo "<div id='item_details' style=''>";
                echo "<div id='item_label'>";
                echo "<div id='dish_price'>";
                echo "<a style='font-size:30pt; margin-top:20px; float:left;'>\$</a>";
                echo "<a style='font-size:50pt; margin-top:40px; float:left;'>$prices[0]</a>";
                echo "<a style='font-size:10pt; margin-top:40px; float:left;'>.</a>";
                echo "<a style='font-size:20pt; margin-top:30px; float:left;'>$prices[1]</a>";
                echo "</div>";
                echo "<div id='dish_img'><img src='css_and_img/$dish_img' style='width: 320px; height:160px; border:none' border=none></div>";
                echo "</div>";
                echo "<div id='item_info'>    ";
                echo "<div id='dish_name'>$dish_name</div>";
                echo "<div id='dish_descr'>Description: $dish_descr</div>";
                echo "<div id='add_to_function'>&nbsp;&nbsp;Qty:";
                echo "<input type=‘button’ ID=‘Button2’ value=‘-’ onMouseDown=‘md(this)’ onMouseOut=‘mo(this)’ onMouseUp=‘mo(this)’ >";
                echo "<input class=’txt_qty‘ type=’text‘ name=’textbox_qty‘ id=‘textbox_qty’ value=‘1’ $disabled/>";
                echo "<input type=‘button’ ID=‘Button1’ value=‘+’ onMouseDown=‘md(this)’ onMouseOut=‘mo(this)’ onMouseUp=‘mo(this)’ >";
                
                echo "<input class='add_button' type='submit' name='btn_add' id='btn_add' value='Add to Cart' $disabled/>";
                echo "</div>";
            
                echo "</div>";
                echo "</div>";
                echo "</br>";
                echo "</form>";
            }